Original price
Rs. 6,099.00
-
Original price
Rs. 6,099.00
Original price
Rs. 6,099.00
Current price
Rs. 3,501.00
Rs. 3,501.00
-
Rs. 3,501.00
Current price
Rs. 3,501.00
| /
CM672 • TX + RX • DUAL-PAIR TRAVEL AUDIO
UGREEN 35222A CM672 Bluetooth 5.2 Airplane TX/RX Adapter
Overview
Bluetooth 5.2SKU 35222ACM672TX + RX
UGREEN CM672 transmitter-receiver with in-flight adapter
Key features
Role
a rechargeable 3.5mm Bluetooth audio adapter that transmits wired audio to Bluetooth listeners in TX mode and receives phone audio for a wired AUX system in RX mode.
Audio path
TX mode takes analogue audio from an airplane seat, TV, computer or other 3.5mm output and sends it to Bluetooth headphones/speakers. RX mode receives Bluetooth audio from a phone/tablet and outputs it through the integrated 3.5mm plug to a car, amplifier or powered speaker.
Codec boundary
Documentation lists TX: SBC. RX lists SBC and AAC. aptX, aptX Adaptive, LDAC and LC3 are not claimed.
Power design
Up to 28 hours in TX mode and up to 20 hours in RX mode under UGREEN test conditions. Mode, volume, calls, temperature, battery age and RF environment affect runtime. USB-C rechargeable, with a 300mAh, 3.7V / 1.11Wh lithium battery listed. Follow airline rules for portable lithium devices and do not charge if wet or damaged.
Audio direction and connector roles
TX mode takes analogue audio from an airplane seat, TV, computer or other 3.5mm output and sends it to Bluetooth headphones/speakers. RX mode receives Bluetooth audio from a phone/tablet and outputs it through the integrated 3.5mm plug to a car, amplifier or powered speaker.
Connector rule: 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.
Start safely: set the correct mode, select the target input and lower every volume control before testing.
TX and RX direction map
Sound, codecs, calls and latency
Codecs
Documentation lists TX: SBC. RX lists SBC and AAC. aptX, aptX Adaptive, LDAC and LC3 are not claimed.
Latency
No millisecond result is verified. SBC/AAC do not establish delay-free television or gaming use; source processing and listening-device buffers also matter.
Microphone and calls
The built-in microphone supports calls in RX mode. TX mode sends programme audio only and does not return a Bluetooth headset microphone to an airplane, TV or computer.
Real-world fidelity
Source 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.
Use scenarios
Scenario 1
Airplane seat audio to one or two Bluetooth headsets.
Scenario 2
TV headphone output to shared wireless listeners.
Scenario 3
Phone music to an older car AUX system in RX.
Scenario 4
Tablet audio to a wired powered speaker.
Scenario 5
Travel use where long per-mode battery runtime matters.
Airline-seat transmitter use scenario
Setup and usability guidance
Step 1: Charge CM672 and set TX or RX before pairing.
Step 2: In TX, plug into a headphone/line output; in RX, plug into a line/AUX input.
Step 3: Put the first Bluetooth endpoint in pairing mode and keep other saved devices away.
Step 4: Confirm stable audio at low volume before adding a second endpoint.
Step 5: For twin-prong aircraft sockets, use the supplied flight adapter only where permitted.
Usability rule: establish one clean path first. Add a second source, listener, output or peripheral only after the first works reliably.
Controls
A TX/RX switch defines the wired-port role; the multifunction control handles power/pairing. Set the mode before connecting and pair one endpoint before adding the second.
Second-device behaviour
Up to two Bluetooth endpoints are listed in both TX and RX modes. TX shares one source programme with two listeners; RX provides convenient two-source connection, not mixed simultaneous programmes.
Recovery
Forget CM672 on source devices or clear saved listener pairings as applicable, power-cycle the adapter in the desired mode and follow the CM672 reset timing.
Dual-endpoint pairing behaviour
Compatible devices and systems
Class: 3.5mm headphone/line sources such as airplane entertainment, TVs and computers in TX; Bluetooth phones/tablets/computers plus car AUX, powered speakers and amplifiers in RX.
Match the operating-system/audio profile and connector role, not only the Bluetooth logo.
Confirm whether you need programme audio, microphone return, peripheral data or file transfer; these use different profiles.
For AUX/RCA products, confirm the destination is a line-level input and already has its own amplifier.
For PC adapters, verify driver requirements and disable a competing built-in Bluetooth radio.
For two-way products, confirm that the chosen TX or RX mode matches the wired device.
Receiver-mode car calling and music scenario
What this product does
Switches a 3.5mm connection between transmitter input and receiver output roles.
Pairs the number of endpoints documented for this SKU.
Runs from its internal rechargeable battery for portable use.
Reconnects to saved compatible endpoints when the selected mode matches.
Carries programme audio within the codec and call boundaries stated above.
What this product does not do
no aptX/LDAC, optical audio, USB data audio, guaranteed lip-sync, TX microphone return, passive-speaker amplification or water rating; aircraft use remains subject to crew instructions.
Does not guarantee uninterrupted wireless service through metal, walls, crowds or heavy 2.4GHz interference.
Does not repair a damaged source, USB port, AUX socket, amplifier or speaker.
Does not make a connector compatible merely because it fits physically.
Does not prove ANC, aptX, LDAC, multipoint or microphone return from the Bluetooth version number alone.
What to do
Check the label
Confirm SKU, model and stored revision on the product or box before relying on a specification.
Begin with one endpoint
Pair and test one path before adding any supported second device or output.
Lower volume first
Protect hearing and speakers when changing mode, output, codec, call profile or device.
Keep connections dry
Inspect USB and audio plugs, remove debris without metal tools and dry completely before power.
Use official drivers/manuals
Use the CM/BT model instructions; related UGREEN revisions can use different buttons and radios.
Pause before switching
When two sources are connected, pause the current programme before starting the other.
What not to do
Do not infer features
Bluetooth 5.x/6.0 alone does not establish codec, ANC, microphone, multipoint or delay.
Do not force plugs
Stop if a connector does not align; check port type, direction, damage and case clearance.
Do not use speaker-level output
AUX/RCA receiver inputs are line-level; passive speakers still need an amplifier.
Do not pair while moving
Configure car and aircraft audio before movement and follow local/crew instructions.
Do not charge damaged cells
Stop for swelling, leakage, odour or abnormal heat and seek proper battery disposal.
Do not borrow reset timing
Battery, charging and realistic runtime
Battery/power: Up to 28 hours in TX mode and up to 20 hours in RX mode under UGREEN test conditions. Mode, volume, calls, temperature, battery age and RF environment affect runtime.
Charging/connection: USB-C rechargeable, with a 300mAh, 3.7V / 1.11Wh lithium battery listed. Follow airline rules for portable lithium devices and do not charge if wet or damaged.
Published runtime is normally a controlled maximum; volume, calls, codec, temperature, range and battery age can shorten it.
USB-powered models have no reserve runtime and stop when vehicle/computer power stops.
Use compliant, undamaged power sources and disconnect any product that becomes unusually hot.
Do not leave rechargeable products empty for months; follow the manual for long-term storage.
Up to 28-hour transmitter battery guide
Warnings and limitations
Hearing: begin at low volume, limit exposure and stop if you notice discomfort or ringing. Bluetooth features and noise processing are not hearing protection.
Battery: 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.
Aircraft: follow crew instructions, use only permitted headphone outputs and keep wireless devices off whenever directed. Carry lithium products in accordance with airline rules.
Driving: pair, mount, select sources and set volume while parked. Hands-free calling does not remove attention or legal responsibilities.
Water: This product does not has a IP rating. Keep adapters, plugs and charging ports dry; never connect power while damp.
Heat and storage: 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.
Audio ports: 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.
Troubleshooting and reset
No pairing
Bring devices close, verify power/mode, disconnect competing saved devices and pair one endpoint first.
Connected but silent
Check source playback, OS output, TX/RX direction, AUX input selection, cable seating and both volume controls.
Audio but no microphone
The built-in microphone supports calls in RX mode. TX mode sends programme audio only and does not return a Bluetooth headset microphone to an airplane, TV or computer. Confirm the call app input and permissions only where a microphone path is documented.
Drop-outs
Reduce distance and metal/body obstruction, move from crowded 2.4GHz radios and test one connection at a time.
Delay
Compare with a wired path; no unstated codec or Bluetooth version can remove all source and endpoint buffering.
Reset path
Forget CM672 on source devices or clear saved listener pairings as applicable, power-cycle the adapter in the desired mode and follow the CM672 reset timing.
Technical specifications
Product / model
UGREEN Bluetooth audio transmitter/receiver / CM672
SKU / colour
35222A / black
Bluetooth version
5.2
Modes
TX transmitter and RX receiver
Codecs
TX: SBC; RX: SBC and AAC
Profiles
A2DP, AVRCP, HSP and HFP listed
Wired audio
Integrated 3.5mm TRS plug
Dual pairing
Up to two endpoints in TX or RX
Microphone
Built in; calls in RX only
Runtime
Up to 28h TX / 20h RX
Battery
300mAh, 3.7V / 1.11Wh
Charging
USB-C
Listed range
Up to 10m unobstructed
Listed ranges and runtimes are qualified maxima in suitable conditions, not universal guarantees.
Package contents
Pre-purchase checklist
Confirm this SKU/revision on the sealed product.
Confirm TX, RX or Windows-host direction.
Confirm every wired input/output and required power source.
Confirm call/microphone, codec and second-device needs separately.
Check whether any cable, charger or flight adapter you require is actually listed.
Product-specific FAQ
What exactly is UGREEN 35222A?
It is a rechargeable 3.5mm Bluetooth audio adapter that transmits wired audio to Bluetooth listeners in TX mode and receives phone audio for a wired AUX system in RX mode.
How do TX and RX modes differ?
TX mode takes analogue audio from an airplane seat, TV, computer or other 3.5mm output and sends it to Bluetooth headphones/speakers. RX mode receives Bluetooth audio from a phone/tablet and outputs it through the integrated 3.5mm plug to a car, amplifier or powered speaker.
Which codecs does SKU 35222A support?
Documentation lists TX: SBC. RX lists SBC and AAC. aptX, aptX Adaptive, LDAC and LC3 are not claimed.
Is low latency guaranteed?
No millisecond result is verified. SBC/AAC do not establish delay-free television or gaming use; source processing and listening-device buffers also matter.
Do microphone and calls work?
The built-in microphone supports calls in RX mode. TX mode sends programme audio only and does not return a Bluetooth headset microphone to an airplane, TV or computer.
Can two listeners or sources stay connected?
Up to two Bluetooth endpoints are listed in both TX and RX modes. TX shares one source programme with two listeners; RX provides convenient two-source connection, not mixed simultaneous programmes.
What battery life or power does it use?
Up to 28 hours in TX mode and up to 20 hours in RX mode under UGREEN test conditions. Mode, volume, calls, temperature, battery age and RF environment affect runtime. USB-C rechargeable, with a 300mAh, 3.7V / 1.11Wh lithium battery listed. Follow airline rules for portable lithium devices and do not charge if wet or damaged.
Which devices and systems are compatible?
3.5mm headphone/line sources such as airplane entertainment, TVs and computers in TX; Bluetooth phones/tablets/computers plus car AUX, powered speakers and amplifiers in RX.
What should I do if pairing fails?
Forget CM672 on source devices or clear saved listener pairings as applicable, power-cycle the adapter in the desired mode and follow the CM672 reset timing.
What is in the package?What should it not be used for?
no aptX/LDAC, optical audio, USB data audio, guaranteed lip-sync, TX microphone return, passive-speaker amplification or water rating; aircraft use remains subject to crew instructions.
