Ergonomic Vertical MouseIt is important to equip with the correct size vertical mouse, which let you easily get used to the use of vertical mouse, and more help dramatically comfort hands muscle.Every people have different hand size and there is no one size fitting all. Do not worry, you could find your correct size vertical mouse with Ergonomic Series. New Ergonomic Holding Gesture-57Just hold the vertical mouse with scientific angle-57 degree, rest your hand in mouse and keep your forearm muscel under natural position. Compared with tradition-shaped mouse, reduce arm discomfort and hand stiffness. Plug and Play, Stable 2.4G Wireless2.4G RF wireless connection with USB Nano Receiver, with 10m/30ft efficient distance, just plug and play (please note that due to portable design, the USB Nano receiver stored in the battery compartment, please find the USB receiver in the battery compartment) 3 Adjustable DPI1000-1200(default)-1600, 3 Gear DPI which would be easily shift according to your daily working requirement by the DPI button behind the scroll wheel. And with sensitive optical engine, providing smooth and precise tracking on a wide range of surfaces. Wide CompatibilityCompatible with Windows 7, 8, 10 operating system. Fits for different devices, Laptop, PC Computer, Notebook, Macbook(limited supports to Mac, the side button are not available for Mac) (Compared with traditional mouse, with unique ergonomic vertical design, it may take a few days to get used to using it)