{"product_id":"ugreen-bluetooth-5-4-transmitter-and-receiver","title":"UGREEN 45812 CM872 Bluetooth 5.4 TX\/RX Audio Adapter","description":"\u003cdiv class=\"ug-wireless-audio-guide\" style=\"max-width:1200px;margin:0 auto;background:#fff;color:#263b32;font-family:Arial,Helvetica,sans-serif;line-height:1.64;overflow:hidden;\"\u003e\n\u003csection class=\"ug-section\" style=\"padding:clamp(28px,5vw,52px);background:linear-gradient(135deg,#f5fbf7 0%,#e5f6ec 52%,#d8f0e2 100%);border-top:5px solid #0c8a4b;border-bottom:1px solid #cfe4d6;\"\u003e\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:30px;align-items:center;\"\u003e\n\u003cdiv\u003e\n\u003cspan style=\"display:inline-block;padding:7px 12px;border-radius:999px;background:#0c8a4b;color:#fff;font-size:.84rem;font-weight:800;\"\u003eCM872 • 3.5MM TX\/RX • DUAL PAIRING\u003c\/span\u003e\u003ch1 style=\"margin:14px 0 10px;color:#123b2b;font-size:clamp(1.8rem,4vw,3rem);line-height:1.13;\"\u003eUGREEN 45812 CM872 Bluetooth 5.4 TX\/RX Audio Adapter\u003c\/h1\u003e\n\u003ch2 style=\"margin:18px 0 8px;color:#087642;font-size:1.35rem;\"\u003eOverview\u003c\/h2\u003e\n\n\u003cdiv style=\"margin-top:18px;\"\u003e\n\u003cspan style=\"display:inline-block;margin:4px 7px 4px 0;padding:7px 11px;border-radius:999px;background:#fff;border:1px solid #a8d8bd;color:#0c7542;font-weight:800;\"\u003eBluetooth 5.4\u003c\/span\u003e\u003cspan style=\"display:inline-block;margin:4px 7px 4px 0;padding:7px 11px;border-radius:999px;background:#fff;border:1px solid #a8d8bd;color:#0c7542;font-weight:800;\"\u003eSKU 45812\u003c\/span\u003e\u003cspan style=\"display:inline-block;margin:4px 7px 4px 0;padding:7px 11px;border-radius:999px;background:#fff;border:1px solid #a8d8bd;color:#0c7542;font-weight:800;\"\u003eCM872\u003c\/span\u003e\u003cspan style=\"display:inline-block;margin:4px 7px 4px 0;padding:7px 11px;border-radius:999px;background:#fff;border:1px solid #a8d8bd;color:#0c7542;font-weight:800;\"\u003eTX + RX\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure style=\"margin:18px 0 0;border:1px solid #d5e8dd;border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 10px 26px rgba(12,117,66,.10);\"\u003e\u003cimg loading=\"eager\" fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0581\/3780\/4899\/files\/45812_01.webp?v=1783663093\" alt=\"UGREEN 45812 UGREEN 45812 transmitter-receiver product view\" style=\"display:block;width:100%;height:auto;max-height:760px;object-fit:contain;background:#fff;\"\u003e\u003cfigcaption style=\"padding:11px 14px;border-top:1px solid #dce9e1;background:#f3f8f5;color:#52655b;font-size:.86rem;\"\u003eUGREEN 45812 transmitter-receiver product view\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#fff;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #c9e8d5;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eKey features\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,225px),1fr));gap:14px;\"\u003e\n\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eRole\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003ea rechargeable two-way 3.5mm Bluetooth audio adapter for transmitting from wired sources to Bluetooth listeners or receiving phone\/tablet audio on a wired AUX system.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eAudio path\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eIn TX, audio enters through the attached 3.5mm plug from a TV, airplane seat, computer or gym machine and travels to Bluetooth headphones\/speakers. In RX, phone\/tablet audio arrives by Bluetooth and exits the plug into a car, powered speaker or stereo AUX input.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eCodec boundary\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eNo codec list is published for the India Bluetooth 5.4 revision. SBC, AAC, aptX, LDAC and LC3 are not asserted beyond whatever compatible endpoints negotiate.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003ePower design\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eUp to 18 hours in RX mode and 16 hours in TX mode. Figures are test maxima and vary with volume, endpoint, temperature, battery age and radio conditions. Rechargeable through USB-C. No full-charge time is asserted for the stored revision.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#f6f9f7;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #168346;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eAudio direction and connector roles\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr));gap:25px;align-items:center;\"\u003e\n\u003cdiv\u003e\n\u003cp style=\"margin:0 0 13px;\"\u003eIn TX, audio enters through the attached 3.5mm plug from a TV, airplane seat, computer or gym machine and travels to Bluetooth headphones\/speakers. In RX, phone\/tablet audio arrives by Bluetooth and exits the plug into a car, powered speaker or stereo AUX input.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 13px;\"\u003e\u003cstrong\u003eConnector rule:\u003c\/strong\u003e a source\/output must feed a destination\/input. USB power, USB host data, analogue AUX and Bluetooth radio roles are separate even when one enclosure handles several of them.\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eStart safely:\u003c\/strong\u003e set the correct mode, select the target input and lower every volume control before testing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure style=\"margin:18px 0 0;border:1px solid #d5e8dd;border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 10px 26px rgba(12,117,66,.10);\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0581\/3780\/4899\/files\/45812_08.webp?v=1783663093\" alt=\"UGREEN 45812 Supported transmitter source and destination map\" style=\"display:block;width:100%;height:auto;max-height:760px;object-fit:contain;background:#fff;\"\u003e\u003cfigcaption style=\"padding:11px 14px;border-top:1px solid #dce9e1;background:#f3f8f5;color:#52655b;font-size:.86rem;\"\u003eSupported transmitter source and destination map\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#fff;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #c9e8d5;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eSound, codecs, calls and latency\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,235px),1fr));gap:14px;\"\u003e\n\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eCodecs\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eNo codec list is published for the India Bluetooth 5.4 revision. SBC, AAC, aptX, LDAC and LC3 are not asserted beyond whatever compatible endpoints negotiate.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eLatency\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eUGREEN describes reduced latency but gives no number or codec. It is not certified for musical-instrument monitoring and is explicitly listed as incompatible with instruments.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eMicrophone and calls\u003c\/h3\u003e\n\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eReal-world fidelity\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eSource file, negotiated codec, radio conditions, analogue cable, amplifier and speakers\/headphones all affect the result. A newer Bluetooth number is not automatically higher sound quality.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\n\u003cfigure style=\"margin:18px 0 0;border:1px solid #d5e8dd;border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 10px 26px rgba(12,117,66,.10);\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0581\/3780\/4899\/files\/45812_06.jpg?v=1783663093\" alt=\"UGREEN 45812 Two-listener television transmitter scenario\" style=\"display:block;width:100%;height:auto;max-height:760px;object-fit:contain;background:#fff;\"\u003e\u003cfigcaption style=\"padding:11px 14px;border-top:1px solid #dce9e1;background:#f3f8f5;color:#52655b;font-size:.86rem;\"\u003eTwo-listener television transmitter scenario\u003c\/figcaption\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#f6f9f7;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #168346;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eUse scenarios\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:14px;\"\u003e\n\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eScenario 1\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eAirplane audio to supported Bluetooth headphones.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eScenario 2\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eTV listening through one or two compatible headsets.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eScenario 3\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003ePhone music to a car AUX system.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eScenario 4\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eTablet streaming to an older powered speaker.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eScenario 5\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003ePortable two-way audio conversion during travel.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\n\u003cfigure style=\"margin:18px 0 0;border:1px solid #d5e8dd;border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 10px 26px rgba(12,117,66,.10);\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0581\/3780\/4899\/files\/45812_03.webp?v=1783663093\" alt=\"UGREEN 45812 Airline-seat transmitter use scenario\" style=\"display:block;width:100%;height:auto;max-height:760px;object-fit:contain;background:#fff;\"\u003e\u003cfigcaption style=\"padding:11px 14px;border-top:1px solid #dce9e1;background:#f3f8f5;color:#52655b;font-size:.86rem;\"\u003eAirline-seat transmitter use scenario\u003c\/figcaption\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#fff;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #c9e8d5;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eSetup and usability guidance\u003c\/h2\u003e\n\u003col style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:9px 0;\"\u003e\n\u003cstrong\u003eStep 1:\u003c\/strong\u003e Charge the adapter and select TX or RX.\u003c\/li\u003e\n\u003cli style=\"margin:9px 0;\"\u003e\n\u003cstrong\u003eStep 2:\u003c\/strong\u003e Connect the 3.5mm plug to an output in TX or an AUX input in RX.\u003c\/li\u003e\n\u003cli style=\"margin:9px 0;\"\u003e\n\u003cstrong\u003eStep 3:\u003c\/strong\u003e Pair one Bluetooth endpoint and verify low-volume audio.\u003c\/li\u003e\n\u003cli style=\"margin:9px 0;\"\u003e\n\u003cstrong\u003eStep 4:\u003c\/strong\u003e Add the second endpoint only after the first is stable.\u003c\/li\u003e\n\u003cli style=\"margin:9px 0;\"\u003e\n\u003cstrong\u003eStep 5:\u003c\/strong\u003e On an aircraft, follow crew instructions and ensure the seat socket is a permitted headphone output.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"margin:16px 0;padding:15px 17px;background:#eef8f2;border-left:5px solid #0c8a4b;\"\u003e\u003cstrong\u003eUsability rule:\u003c\/strong\u003e establish one clean path first. Add a second source, listener, output or peripheral only after the first works reliably.\u003c\/p\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,245px),1fr));gap:14px;\"\u003e\n\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eControls\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eUse the physical TX\/RX switch before pairing; the multifunction control and reset opening handle power, pairing and recovery according to the CM872 manual.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eSecond-device behaviour\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eTwo Bluetooth devices can connect in TX or RX. TX can share one source with two listeners; RX supports convenient two-source connection, not mixing two songs.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eRecovery\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eUse the marked reset control\/manual sequence after forgetting saved pairings. Re-pair one endpoint at close range before restoring a second.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\n\u003cfigure style=\"margin:18px 0 0;border:1px solid #d5e8dd;border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 10px 26px rgba(12,117,66,.10);\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0581\/3780\/4899\/files\/45812_04.webp?v=1783663093\" alt=\"UGREEN 45812 Receiver-mode two-phone car scenario\" style=\"display:block;width:100%;height:auto;max-height:760px;object-fit:contain;background:#fff;\"\u003e\u003cfigcaption style=\"padding:11px 14px;border-top:1px solid #dce9e1;background:#f3f8f5;color:#52655b;font-size:.86rem;\"\u003eReceiver-mode two-phone car scenario\u003c\/figcaption\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#f6f9f7;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #168346;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eCompatible devices and systems\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 15px;\"\u003e\u003cstrong\u003eClass:\u003c\/strong\u003e TVs, airplane entertainment, computers and gym machines with 3.5mm audio output in TX; Bluetooth phones\/tablets plus cars, amplifiers and powered speakers with 3.5mm AUX input in RX.\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:8px 0;\"\u003eMatch the operating-system\/audio profile and connector role, not only the Bluetooth logo.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eConfirm whether you need programme audio, microphone return, peripheral data or file transfer; these use different profiles.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eFor AUX\/RCA products, confirm the destination is a line-level input and already has its own amplifier.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eFor PC adapters, verify driver requirements and disable a competing built-in Bluetooth radio.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eFor two-way products, confirm that the chosen TX or RX mode matches the wired device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfigure style=\"margin:18px 0 0;border:1px solid #d5e8dd;border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 10px 26px rgba(12,117,66,.10);\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0581\/3780\/4899\/files\/45812_07.webp?v=1783663093\" alt=\"UGREEN 45812 Receiver-mode powered-speaker use scenario\" style=\"display:block;width:100%;height:auto;max-height:760px;object-fit:contain;background:#fff;\"\u003e\u003cfigcaption style=\"padding:11px 14px;border-top:1px solid #dce9e1;background:#f3f8f5;color:#52655b;font-size:.86rem;\"\u003eReceiver-mode powered-speaker use scenario\u003c\/figcaption\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#fff;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #c9e8d5;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eWhat this product does\u003c\/h2\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:8px 0;\"\u003eSwitches a 3.5mm connection between transmitter input and receiver output roles.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003ePairs the number of endpoints documented for this SKU.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eRuns from its internal rechargeable battery for portable use.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eReconnects to saved compatible endpoints when the selected mode matches.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eCarries programme audio within the codec and call boundaries stated above.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#f6f9f7;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #168346;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eWhat this product does not do\u003c\/h2\u003e\n\u003cdiv style=\"background:#fff7e7;border:1px solid #f0d296;border-left:6px solid #c56b0a;padding:18px 20px;color:#5d3a08;\"\u003e\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:8px 0;\"\u003enot compatible with AirPods Pro 2, AirPods 4 or AirPods 4 ANC per UGREEN; not for musical instruments, keyboards, mice, printers, file transfer, optical audio, microphone return or water exposure.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eDoes not guarantee uninterrupted wireless service through metal, walls, crowds or heavy 2.4GHz interference.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eDoes not repair a damaged source, USB port, AUX socket, amplifier or speaker.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eDoes not make a connector compatible merely because it fits physically.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eDoes not prove ANC, aptX, LDAC, multipoint or microphone return from the Bluetooth version number alone.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#fff;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #c9e8d5;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eWhat to do\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,225px),1fr));gap:14px;\"\u003e\n\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eCheck the label\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eConfirm SKU, model and stored revision on the product or box before relying on a specification.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eBegin with one endpoint\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003ePair and test one path before adding any supported second device or output.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eLower volume first\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eProtect hearing and speakers when changing mode, output, codec, call profile or device.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eKeep connections dry\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eInspect USB and audio plugs, remove debris without metal tools and dry completely before power.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eUse official drivers\/manuals\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eUse the CM\/BT model instructions; related UGREEN revisions can use different buttons and radios.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003ePause before switching\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eWhen two sources are connected, pause the current programme before starting the other.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#f6f9f7;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #168346;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eWhat not to do\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,225px),1fr));gap:14px;\"\u003e\n\u003carticle style=\"background:#fff;border:1px solid #efd39a;border-top:4px solid #c56b0a;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#844606;font-size:1.05rem;\"\u003eDo not infer features\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eBluetooth 5.x\/6.0 alone does not establish codec, ANC, microphone, multipoint or delay.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #efd39a;border-top:4px solid #c56b0a;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#844606;font-size:1.05rem;\"\u003eDo not force plugs\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eStop if a connector does not align; check port type, direction, damage and case clearance.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #efd39a;border-top:4px solid #c56b0a;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#844606;font-size:1.05rem;\"\u003eDo not use speaker-level output\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eAUX\/RCA receiver inputs are line-level; passive speakers still need an amplifier.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #efd39a;border-top:4px solid #c56b0a;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#844606;font-size:1.05rem;\"\u003eDo not pair while moving\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eConfigure car and aircraft audio before movement and follow local\/crew instructions.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #efd39a;border-top:4px solid #c56b0a;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#844606;font-size:1.05rem;\"\u003eDo not charge damaged cells\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eStop for swelling, leakage, odour or abnormal heat and seek proper battery disposal.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #efd39a;border-top:4px solid #c56b0a;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#844606;font-size:1.05rem;\"\u003eDo not borrow reset timing\u003c\/h3\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#fff;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #c9e8d5;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eBattery, charging and realistic runtime\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 13px;\"\u003e\u003cstrong\u003eBattery\/power:\u003c\/strong\u003e Up to 18 hours in RX mode and 16 hours in TX mode. Figures are test maxima and vary with volume, endpoint, temperature, battery age and radio conditions.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 13px;\"\u003e\u003cstrong\u003eCharging\/connection:\u003c\/strong\u003e Rechargeable through USB-C. No full-charge time is asserted for the stored revision.\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:8px 0;\"\u003ePublished runtime is normally a controlled maximum; volume, calls, codec, temperature, range and battery age can shorten it.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eUSB-powered models have no reserve runtime and stop when vehicle\/computer power stops.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eUse compliant, undamaged power sources and disconnect any product that becomes unusually hot.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eDo not leave rechargeable products empty for months; follow the manual for long-term storage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfigure style=\"margin:18px 0 0;border:1px solid #d5e8dd;border-radius:18px;background:#fff;overflow:hidden;box-shadow:0 10px 26px rgba(12,117,66,.10);\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0581\/3780\/4899\/files\/45812_05.webp?v=1783663093\" alt=\"UGREEN 45812 Up to 18-hour battery guide\" style=\"display:block;width:100%;height:auto;max-height:760px;object-fit:contain;background:#fff;\"\u003e\u003cfigcaption style=\"padding:11px 14px;border-top:1px solid #dce9e1;background:#f3f8f5;color:#52655b;font-size:.86rem;\"\u003eUp to 18-hour battery guide\u003c\/figcaption\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#f6f9f7;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #168346;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eWarnings and limitations\u003c\/h2\u003e\n\u003cdiv style=\"background:#fff7e7;border:1px solid #f0d296;border-left:6px solid #c56b0a;padding:18px 20px;color:#5d3a08;\"\u003e\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:8px 0;\"\u003e\n\u003cstrong\u003eHearing:\u003c\/strong\u003e begin at low volume, limit exposure and stop if you notice discomfort or ringing. Bluetooth features and noise processing are not hearing protection.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e never crush, puncture, short, burn or charge a swollen, leaking, wet or unusually hot rechargeable product. USB-powered models still require a sound, compliant 5V source.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003e\n\u003cstrong\u003eAircraft:\u003c\/strong\u003e follow crew instructions, use only permitted headphone outputs and keep wireless devices off whenever directed. Carry lithium products in accordance with airline rules.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003e\n\u003cstrong\u003eDriving:\u003c\/strong\u003e pair, mount, select sources and set volume while parked. Hands-free calling does not remove attention or legal responsibilities.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003e\n\u003cstrong\u003eWater:\u003c\/strong\u003e This product does not has a IP rating. Keep adapters, plugs and charging ports dry; never connect power while damp.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003e\n\u003cstrong\u003eHeat and storage:\u003c\/strong\u003e do not leave the product on a hot dashboard, near a heater or in direct sun. Keep small adapters and cables away from children and pets.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003e\n\u003cstrong\u003eAudio ports:\u003c\/strong\u003e connect only to the stated headphone\/AUX line-level role. Never connect a 3.5mm\/RCA port to mains, passive-speaker output or an unknown industrial signal.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#fff;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #c9e8d5;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eTroubleshooting and reset\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,245px),1fr));gap:14px;\"\u003e\n\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eNo pairing\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eBring devices close, verify power\/mode, disconnect competing saved devices and pair one endpoint first.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eConnected but silent\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eCheck source playback, OS output, TX\/RX direction, AUX input selection, cable seating and both volume controls.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eAudio but no microphone\u003c\/h3\u003e\n\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eDrop-outs\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eReduce distance and metal\/body obstruction, move from crowded 2.4GHz radios and test one connection at a time.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eDelay\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eCompare with a wired path; no unstated codec or Bluetooth version can remove all source and endpoint buffering.\u003c\/p\u003e\u003c\/article\u003e\u003carticle style=\"background:#fff;border:1px solid #cce5d6;border-top:4px solid #0c8a4b;border-radius:14px;padding:18px;box-shadow:0 8px 22px rgba(12,117,66,.07);\"\u003e\u003ch3 style=\"margin:0 0 8px;color:#087642;font-size:1.05rem;\"\u003eReset path\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#33483f;\"\u003eUse the marked reset control\/manual sequence after forgetting saved pairings. Re-pair one endpoint at close range before restoring a second.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#f6f9f7;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #168346;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eTechnical specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;background:#fff;border:1px solid #d5e8dd;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eProduct \/ model\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eUGREEN Bluetooth audio receiver\/transmitter \/ CM872\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7faf8;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eSKU \/ colour\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003e45812 \/ white\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eBluetooth version\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003e5.4, India\/Canada revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7faf8;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eModes\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eTX and RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eWired interface\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eAttached 3.5mm audio plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7faf8;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eDual pairing\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eTwo endpoints in TX or RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eRuntime\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eUp to 16h TX \/ 18h RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7faf8;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eWorking band\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003e2.400–2.4835GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eCharging\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eUSB-C rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7faf8;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eCodecs\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eNot published for stored revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eMicrophone\/calls\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eNot verified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7faf8;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eInstrument use\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003eExplicitly not compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth style=\"text-align:left;padding:11px 13px;border-bottom:1px solid #dcebe2;color:#175f3c;width:36%;\"\u003eAirPods limitation\u003c\/th\u003e\n\u003ctd style=\"padding:11px 13px;border-bottom:1px solid #dcebe2;\"\u003ePro 2, 4 and 4 ANC listed unsupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"margin:14px 0 0;color:#53665c;font-size:.92rem;\"\u003eListed ranges and runtimes are qualified maxima in suitable conditions, not universal guarantees.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#fff;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #c9e8d5;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003ePackage contents\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 15px;\"\u003e\u003cstrong\u003ePackage:\u003c\/strong\u003e CM872 adapter, USB-C charging cable and documentation; confirm the sealed box if a twin-prong airplane adapter is required because media does not show one.\u003c\/p\u003e\n\u003ch3 style=\"margin:20px 0 10px;color:#087642;\"\u003ePre-purchase checklist\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:8px 0;\"\u003eConfirm this SKU\/revision on the sealed product.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eConfirm TX, RX or Windows-host direction.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eConfirm every wired input\/output and required power source.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eConfirm call\/microphone, codec and second-device needs separately.\u003c\/li\u003e\n\u003cli style=\"margin:8px 0;\"\u003eCheck whether any cable, charger or flight adapter you require is actually listed.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"ug-section\" style=\"padding:32px 28px;margin:0;background:#f6f9f7;border-top:1px solid #dcebe2;box-shadow:inset 5px 0 0 #168346;\"\u003e\u003ch2 style=\"margin:0 0 15px;color:#087642;font-size:clamp(1.35rem,2.5vw,1.8rem);line-height:1.25;\"\u003eProduct-specific FAQ\u003c\/h2\u003e\n\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eWhat exactly is UGREEN 45812?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eIt is a rechargeable two-way 3.5mm Bluetooth audio adapter for transmitting from wired sources to Bluetooth listeners or receiving phone\/tablet audio on a wired AUX system.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eHow do TX and RX modes differ?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eIn TX, audio enters through the attached 3.5mm plug from a TV, airplane seat, computer or gym machine and travels to Bluetooth headphones\/speakers. In RX, phone\/tablet audio arrives by Bluetooth and exits the plug into a car, powered speaker or stereo AUX input.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eWhich codecs does SKU 45812 support?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo codec list is published for the India Bluetooth 5.4 revision. SBC, AAC, aptX, LDAC and LC3 are not asserted beyond whatever compatible endpoints negotiate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eIs low latency guaranteed?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eUGREEN describes reduced latency but gives no number or codec. It is not certified for musical-instrument monitoring and is explicitly listed as incompatible with instruments.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eDo microphone and calls work?\u003c\/summary\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eCan two listeners or sources stay connected?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eTwo Bluetooth devices can connect in TX or RX. TX can share one source with two listeners; RX supports convenient two-source connection, not mixing two songs.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eWhat battery life or power does it use?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eUp to 18 hours in RX mode and 16 hours in TX mode. Figures are test maxima and vary with volume, endpoint, temperature, battery age and radio conditions. Rechargeable through USB-C. No full-charge time is asserted for the stored revision.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eWhich devices and systems are compatible?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eTVs, airplane entertainment, computers and gym machines with 3.5mm audio output in TX; Bluetooth phones\/tablets plus cars, amplifiers and powered speakers with 3.5mm AUX input in RX.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eWhat should I do if pairing fails?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eUse the marked reset control\/manual sequence after forgetting saved pairings. Re-pair one endpoint at close range before restoring a second.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eWhat is in the package?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003eCM872 adapter, USB-C charging cable and documentation; confirm the sealed box if a twin-prong airplane adapter is required because media does not show one\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#fff;border:1px solid #cce5d6;border-radius:12px;margin:10px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;padding:15px 18px;font-weight:800;color:#153d2c;background:#f4f8f6;\"\u003eWhat should it not be used for?\u003c\/summary\u003e\u003cdiv style=\"padding:4px 18px 17px;color:#33483f;\"\u003e\u003cp style=\"margin:10px 0 0;\"\u003enot compatible with AirPods Pro 2, AirPods 4 or AirPods 4 ANC per UGREEN; not for musical instruments, keyboards, mice, printers, file transfer, optical audio, microphone return or water exposure.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Ugreen","offers":[{"title":"Default Title","offer_id":67607334158569,"sku":"45812","price":2987.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/6639\/6905\/files\/45812_01.webp?v=1790839403","url":"https:\/\/www.teckpot.com\/products\/ugreen-bluetooth-5-4-transmitter-and-receiver","provider":"TeckPot","version":"1.0","type":"link"}