UGREEN 65666 is a pink 57° right-handed vertical contour optical mouse for office work, browsing, study and everyday computing. It provides Bluetooth and 2.4GHz through the included USB-A receiver, 4 DPI levels and reduced-noise controls. Below: fit, setup, power, compatibility and limitations without promising medical or competitive-gaming outcomes.
SKU 65666Vertical dual-mode mouseRight-handed4000 DPI max
Pink SKU 65666 from the front, with the USB-A receiver used for 2.4GHz operation.
Key features
Hand orientation
Right-handed.
Shape
57° right-handed vertical contour.
Grip guidance
handshake-style vertical grip for medium to large hands; gallery suggests 17cm+ hand length.
Comfort boundary
Ergonomic describes the physical contour, not a medical treatment. Hand size, posture, desk height and grip preference determine comfort; take regular movement breaks.
The gallery targets medium and large hands, illustrated from about 17 cm hand length upward.
Connection modes and device switching
Connection: Bluetooth and 2.4GHz through the included USB-A receiver.
Host handling: dual connection methods; the current information does not confirm simultaneous multi-host control. Choose Bluetooth or receiver operation; simultaneous control of two hosts is not confirmed.
Range: Up to 10m / 33ft without obstruction. Keep the receiver away from heavily shielded ports, crowded 2.4GHz equipment and large metal obstacles.
USB-C note: the supplied receiver is USB-A. A physical USB-C fit requires a compatible data-capable adapter or hub; a charging-only adapter will not work.
Controls and DPI: what each setting changes
Controls: Left, right, scroll/middle, DPI selector, forward and back. Forward/back thumb buttons; functions depend on OS and application.
1000 DPI
Measured pointer movement for precise tasks.
1600 DPI
Balanced everyday navigation; choose by feel and task.
2000 DPI
Balanced everyday navigation; choose by feel and task.
4000 DPI
Fast pointer travel across a large or high-resolution desktop.
DPI is pointer sensitivity. It does not prove polling rate, latency, gaming class, display sharpness or tracking on every surface.
Four pointer-sensitivity levels are 1000, 1600, 2000 and 4000 DPI.
Reduced-noise controls
What is quieter
The main clicking design is intended to reduce repetitive click noise in shared work, libraries, meetings and late-night use.
What remains audible
Scroll-wheel steps, mode and DPI switches, side buttons, desk contact and physical movement may still make sound.
No percentage promise
User-friendly placement
Use a clean mouse pad and light clicking pressure; a rough desk can create more movement noise than the buttons.
Battery, sleep and power management
Power: 1 × AA battery, not included. This is a replaceable-battery mouse, not a rechargeable mouse.
Battery estimate: Up to 12 months under the gallery’s stated usage conditions. Sleep: Automatic sleep after about 10 minutes of inactivity; move the mouse to wake.
Battery care: insert with correct polarity; use one fresh, undamaged battery of the required type; do not mix chemistries; remove it for long storage; recycle depleted batteries through an appropriate collection route.
One AA battery powers the mouse; the gallery lists 10-minute sleep, a low-battery reminder and an up-to-12-month estimate.
Setup and usability guidance
Open the compartment: locate the receiver and battery bay without forcing the cover.
Install power: insert 1 × aa battery, not included with the printed polarity.
Select the connection: choose Bluetooth or receiver mode; pair Bluetooth in the host settings, or insert the USB-A receiver for 2.4GHz operation.
Switch on: use the physical power switch and wait for the host to recognise the pointer.
Set sensitivity: press the DPI control and test each level on your normal screen.
Check buttons: confirm scrolling and any side-button behaviour in the actual operating system and application.
The control map shows forward and back buttons, primary controls, DPI selection, power, receiver and the 119.8 by 85.8 by 73.1 mm body.
Use scenarios
Office and home work
Navigate documents, spreadsheets, presentations, web pages and ordinary desktop applications.
Study and shared spaces
Reduced-noise clicks suit libraries, classrooms, meetings and rooms where repetitive clicking can distract.
Laptop travel
The cable-free design and nano receiver simplify portable setups; store the receiver securely and switch the mouse off before packing.
Multi-screen work
Higher DPI can move the pointer faster across a large desktop; choose a lower setting when fine placement matters.
Tablet use
Pair with a compatible Bluetooth tablet, or use receiver mode only when the tablet supports USB host/OTG and the correct data adapter.
Casual games
Adjustable DPI may suit casual play, but no competitive polling rate, macro software or latency number is verified.
The side view shows the elevated 57-degree right-handed form; it is a shape description, not a medical claim.
Compatible devices and systems
System guidance: Windows 7/8.1/10/11, macOS 10.5 or later, Linux, ChromeOS and Android 5.0 or later on compatible hosts.
Windows PCs
Primary pointer, click and wheel functions should work after standard plug-and-play or Bluetooth pairing. Shortcut behaviour is application-dependent.
Mac computers
Primary functions are supported on compatible systems; side-button and mode-button behaviour can differ from Windows.
Chromebooks and Linux
Basic HID mouse functions are expected on compatible hosts; advanced remapping is not promised.
Phones and tablets
A listed mobile OS does not guarantee every app supports a pointer. USB receiver use also requires host/OTG support and a data adapter.
Optical tracking and surface guidance
The optical sensor is intended for common, clean, flat work surfaces such as a mouse pad, paper, finished wood and suitable fabric.
Use a mouse pad when the desk is transparent, mirrored, highly reflective, glossy, uneven or heavily patterned. Dust, hair, moisture and low battery can affect tracking.
No “works on every surface” promise is made. Clear glass and mirrors are specifically not guaranteed.
What this product does
Provides standard optical pointer, click and scroll input to a compatible host.
Connects by bluetooth and 2.4ghz through the included usb-a receiver.
Offers 4 DPI settings: 1000, 1600, 2000, 4000.
Uses a reduced-noise control design for everyday productivity.
Runs from 1 × aa battery, not included with automatic sleep after about 10 minutes of inactivity; move the mouse to wake.
What this product does not do
It is not rechargeable and has no charging port or built-in battery.
It does not transfer files, add storage, improve display resolution or replace a Bluetooth adapter for other accessories.
It does not guarantee medical relief, injury prevention or correct posture.
It does not provide competitive-gaming polling rate, programmable macros or zero-latency performance.
It does not guarantee tracking on glass, mirrors or every material.
What to do
Choose the correct SKU
Match the colour, shape, connection method and DPI list to SKU 65666; related UGREEN mice are not interchangeable.
Check hand fit
Confirm right-handed placement and the preferred grip before long sessions. Change posture and take movement breaks.
Protect the receiver
Use the storage position where verified, or a secure accessory pouch. A lost receiver may not be replaceable by a generic dongle.
Keep firmware expectations simple
Use operating-system pointer settings for ordinary adjustment. No model-specific programming software is promised.
What not to do
Do not force covers or ports
Align the battery cover and receiver correctly; never bend the receiver or jam it into USB-C.
Do not expose to hazards
Keep away from liquid, high heat, flames, direct impact, crushing and loose metal objects.
Do not use a damaged battery
Stop if a battery leaks, swells, overheats or has damaged wrapping. Avoid skin contact with leaked material.
Do not overstate the product
Quiet is not silent; ergonomic is not medical; high DPI is not a gaming-performance certificate.
Warnings and limitations
Cleaning: switch off, remove the receiver and battery, then wipe with a soft dry cloth. Use no solvent, spray, abrasive or dripping cloth; keep the optical opening dry.
Radio use: nearby 2.4GHz devices, USB 3.x electrical noise, metal barriers and crowded wireless environments can reduce range. Move the receiver or use a short extension/hub if appropriate.
Storage: switch off before travel, secure the receiver, remove the battery for extended storage and keep the product away from children and pets.
Stop use: discontinue use after liquid ingress, impact damage, persistent overheating, burning smell, cracked housing, exposed battery contacts or unstable USB connection.
Technical specifications
Brand / SKU
UGREEN 65666
Model / type
Vertical dual-mode mouse
Colour
Pink
Hand orientation
Right-handed
Shape / grip guidance
57° right-handed vertical contour; handshake-style vertical grip for medium to large hands; gallery suggests 17cm+ hand length
Connection
Bluetooth and 2.4GHz through the included USB-A receiver
Connection handling
dual connection methods; the current information does not confirm simultaneous multi-host control
Stated range
Up to 10m / 33ft without obstruction
Sensor
Optical
DPI levels
1000 / 1600 / 2000 / 4000 DPI
Controls
Left, right, scroll/middle, DPI selector, forward and back
Side-button note
Forward/back thumb buttons; functions depend on OS and application
Power
1 × AA battery, not included
Battery estimate
Up to 12 months under the gallery’s stated usage conditions
Power saving
Automatic sleep after about 10 minutes of inactivity; move the mouse to wake
Receiver storage
Receiver storage is not clearly by the gallery
Compatible systems
Windows 7/8.1/10/11, macOS 10.5 or later, Linux, ChromeOS and Android 5.0 or later on compatible hosts
Dimensions / size
Approximately 119.8 × 85.8 × 73.1mm
Rechargeable
No
Package contents
1 × UGREEN 65666 mouse; 1 × USB-A nano receiver; product documentation where supplied. AA battery and adapters are not included.
Package contents
The mouse, included USB-A nano receiver and product documentation where supplied are listed in the table above. AA battery, USB-C adapter and connected devices are not included.
Product-specific FAQ
How does UGREEN 65666 connect?
Bluetooth and 2.4GHz through the included USB-A receiver. Choose Bluetooth or receiver operation; simultaneous control of two hosts is not confirmed.
Is the USB receiver included?
Yes. The included nano receiver uses USB-A. Receiver storage is not clearly by the gallery. A USB-C-only host needs a compatible data adapter or hub, unless Bluetooth mode is used.
Does it support Bluetooth?
Yes. Bluetooth and 2.4GHz through the included USB-A receiver. Pair through the host’s Bluetooth settings and use the mouse’s mode control as described above.
Can it switch between devices?
Choose Bluetooth or receiver operation; simultaneous control of two hosts is not confirmed. Switching modes is not the same as controlling two computers at the same time.
What are the DPI settings?
The levels are 1000 / 1600 / 2000 / 4000 DPI. DPI changes pointer sensitivity, not display resolution or sensor polling rate.
Is it suitable for left-handed use?
The contour and thumb-button placement are designed primarily for right-handed use.
Is it completely silent?
No. The primary controls are designed to reduce clicking noise, but the wheel, switches and physical movement can still be heard.
Is it rechargeable?
No. It uses 1 × aa battery, not included and has no charging port or built-in rechargeable cell.
How long will the battery last?
Up to 12 months under the gallery’s stated usage conditions. Battery brand, connection mode, DPI, daily use, surface, temperature and switch-off habits can change the result.
Will every button work on macOS?
Forward/back thumb buttons; functions depend on OS and application. Standard cursor and primary click functions are expected on a compatible host, but shortcuts can vary by OS and application.
Is this a gaming mouse?
It can be used for casual games, but no competitive polling rate, programmable-button software, onboard macro memory or latency specification is verified. It is positioned primarily for everyday productivity.
Check this model before ordering
Match SKU 65666, colour Pink, bluetooth and 2.4ghz through the included usb-a receiver, right-handed design and the DPI list. Similar UGREEN mouse families can differ in Bluetooth support, buttons, grip, battery estimates and receiver storage.
SKU 65666Pink1000/1600/2000/4000 DPI1 × AA battery, not included
