Lenovo 600 Bluetooth 5.0 Silent Mouse: Compact, Portable, Dongle-Free Multi-Device connectivity with Microsoft Swift Pair | 3-Level Adjustable DPI up to 2400 | Battery Life: up to 1 yr

From the manufacturer

The Lenovo 600 Bluetooth Silent Mouse has Silent buttons without the annoying click sounds and has a minimalist pocket sized design you can comfortably rest your palm on. Easy to carry and fit into pockets without bulging
Blue Optical Sensor: Take your productivity to the max with a blue optical sensor that allows you to work on almost any surface, revolutionary, distraction-free silent buttons, and on-the-fly adjustable DPI controls. DPI Resolution : 3-level Adjustable (800, 1600, 2400)
Button Life: Right/Left buttons – up to 3 million click;Scroll button – up to 100,000 clicks | Number of Buttons : 4 (Left Click, Right Click, Scroll Click, DPI Switch) | Scrolling : 2-way Scroll Wheel
Multiple device connectivity & Quick pairing: Pair with up to two devices at once and quickly switch between them with the push of a button, thanks to Bluetooth 5.0 and Microsoft Swift Pair technology. On-Off Switch: Yes | Battery Type : 1 x AA Battery | Battery Life : Up to 12 Months;Power Source Type: Battery Powered
Operating System: Windows 10chrome Os;Hardware Platform: Laptoppc