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: This mouse adapter adopts 2.4G wireless technology, ensuring a 10m/33ft wireless connection range without frequent disconnection. Plug and play on Windows 11/10/8/7/XP, macOS, Linux, and Chrome OS. (Note: USB connection is required; the USB receiver is stored on the back of the wireless mouse) 4000 DPI 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 90% Silent Click and Scroll: This silent wireless mouse reduces 90% of click sounds, creating a quieter environment. It is suitable for offices, homes, libraries, cafes, and airplanes Wide Compatibility: It is 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, iPadOS 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. Slide the switch on the bottom of the mouse to switch between Windows and macOS connection system. For Linux, HarmonyOS, and Android systems, please set the switch to the Windows position. 4. Button life: 5 million clicks for left and right buttons, 3 million clicks for middle button/side button, and 300,000 times for scroll wheel