Ergonomic Vertical Mouse It's important to equip yourself with a vertical mouse of the right size, which makes it easy to get used to using a vertical mouse and provides significantly more comfort for your hand muscles. Everyone has different hand sizes, and there's no one-size-fits-all solution. Don't worry, you can find your right size vertical mouse with the Ergonomic Series. New Ergonomic Grip Gesture-57 Simply hold the vertical mouse at a scientific 57-degree angle, rest your hand on the mouse, and keep your forearm in a natural position. Compared to traditional mouse shapes, it reduces arm discomfort and hand stiffness. Plug and Play, Stable 2.4G Wireless 2.4G 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, find the USB receiver in the battery compartment) 3 Adjustable DPI 1000-1200(default)-1600, 3 gears of DPI that can be easily switched according to your daily work needs with the DPI button behind the scroll wheel. And with a sensitive optical engine, providing smooth and accurate tracking on a wide range of surfaces. Wide Compatibility Compatible with Windows 7, 8, 10 operating systems. Suitable for various devices, laptop, PC computer, notebook, Macbook (limited support for Mac, the side buttons are not available for Mac) (Compared to traditional mice, with a unique ergonomic vertical design, it may take a few days to get used to using it)