Ergonomic Vertical MouseIt is important to equip yourself with the correct size of vertical mouse, which will allow you to easily get used to using a vertical mouse and help dramatically relieve muscle tension in your hands. All people have different hand sizes and there is no one size fits all. Don't worry, you can find your correct size of vertical mouse with the Ergonomic Series. New Ergonomic Posture Gesture-57Hold the vertical mouse at a scientific 57-degree angle, rest your hand in the mouse and keep your forearm muscle in a natural position. Compared to traditionally shaped mice, it reduces arm discomfort and hand stiffness. Plug and Play, Stable 2.4G Wireless2.4G RF wireless connection with USB Nano receiver, with 10m/30ft effective distance, just plug and play (please note that due to the portable design, the USB Nano receiver is stored in the battery compartment, please find the USB receiver in the battery compartment) 3 Adjustable DPI1000-1200(default)-1600, 3 DPI modes that can be easily switched depending on your daily work requirements with the DPI button behind the scroll wheel. And with a sensitive optical engine, providing smooth and precise tracking on a wide range of surfaces. Wide CompatibilityCompatible with Windows 7, 8, 10 operating systems. Suitable for various devices, Laptop, PC Computer, Notebook, Macbook (limited support for Mac, side buttons are not available for Mac) (Compared to traditional mouse, with unique ergonomic vertical design, it may take a few days to get used to using it)