UGREEN 2.4GHz Ergonomic Vertical Mouse, 4000DPI Optical Tracking, 57 Angle, 5 Buttons, 12 Month Battery Life, 4 Adjustable DPI Levels Wireless Silent Mouse for Laptop, Desktop, Macbook

57° Ergonomic Angle: This UGREEN Vertical Mouse features a 57° ergonomic design that effectively reduces hand fatigue. Its 57-degree inclined angle perfectly conforms to the shape of your palm, alleviating pressure on the wrist. It is especially suitable for users who work long hours at a desk, particularly those with wrist issues such as carpal tunnel syndrome. 2.4G Wireless Connection: USB 2.4G Wireless Mouse Adapter adopts 2.4G wireless technology, ensuring 10m/33ft wireless connection range without frequent disconnection. Plug and play on Windows 11/10/8/7/XP, Mac OS, Linux and Chrome OS. (Note: USB connection is required, USB receiver is stored on the back of the wireless mouse) 4000DPI Precision: With four DPI options (1000/1600/2000/4000), you can easily adjust the sensitivity to match your usage or screen resolution, ensuring precise control. 99% Silent Click and Scroll: The Silent Wireless Mouse reduces 99% of click sounds, creating a quieter environment. The Noiseless Mouse is suitable for offices, homes, libraries, cafes, and airplanes. Wide Compatibility: Compatible with a wide range of operating systems, including Windows 7/8.1/10/11, macOS 10.15 and above, iOS 13.4 and above, iPad OS 14.0 and above, Linux, Chrome OS, and Android 5.0, making it versatile for various devices. Note: 1/The mouse package does not include batteries. 2/First-time users of an ergonomic mouse will need at least a month to adapt. 3/Drag the bottom of the mouse to switch between win and mac connection system. Linux, HarmonyOS, Android system can also be switched to win system. 4/Button life: 5 million times for left and right buttons, 3 million times for middle button/side button, 300,000 times for scroll wheel