UGREEN Wireless Mouse, Silent Computer Mouse, Ergonomic Comfort Design 18-Month Battery, - Sold by UGREEN GROUP LIMITED UK / FBA

Number of buttons 6

• 4K DPI Precise Tracking: The wireless mouse offers precise tracking on any surface with optical tracking technology, including glass, with 5 adjustable DPI levels (4000/2000/1600/1200/800), making it ideal for detailed tasks like CAD drafting
• Plug and Play: Just plug in the tiny USB receiver and start working in seconds with a strong, reliable connection to your computer mouse up to 49 ft / 15 m
• Compact Mouse: With a comfortable and ergonomic shape, this ergonomic mouse feels great in either right or left hand and is far superior to a touchpad
• Slient Clicks and Scroll: The slient mouse with slient clicks, offering the same satisfying feel but with 90% less click noise, eliminating noise and distractions for you and others around you
• 18-Month Battery Life: With one AA Battery (Not Included), the wireless mouse for laptop realizes an 18-month battery life. Besides, this USB Silent Mouse automatically goes into auto-sleep mode with no operation after 3 seconds
• 6 Buttons: Added next/previous buttons provide convenience when webpage browsing; the superior choice for work form home, office professionals and people who work at length at the computer

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info added by @wadz

Quiet Click More Focused Work
When you press the mouse button, the sound is just under 40 dB, which is very quiet and barely audible. If you work at night, in web meetings or in large offices, this mouse is particularly suitable.

Non-slip Mouse Film
The mouse is equipped with a non-slip foot pad that is durable and smooth, so there is no friction noise when moving the mouse even on hard surfaces. And it can be used on a variety of surfaces such as resin/leather/wood/fabric/paper.

Designed for comfort
The ergonomic shape and good feel of the mouse make it really comfortable to hold. This allows your wrist to relax and makes the mouse a good companion for long working hours.

Extremely smooth scroll wheel
The silicone material of the scroll wheel provides a skin-friendly feel and achieves a perfect balance between speed and precision.

Item Weight - 72 Grams
Item Dimensions L x W - 11L x 7.1W centimetres