[Ergonomic Vertical Design]: Large unique vertical ergonomic computer mouse with special volute bionic design reduce arm discomfort and hand stiffness [2.4G Wireless]: 2.4G RF wireless connection with USB Nano Receiver, with 10m/30ft efficient distance, just plug and play (please note that due to simple design, the USB Nano receiver stored in the battery compartment, please find the USB receiver in the battery compartment ) [Removable Wrist Rest]: Humanized wrist rest design, let your forearm and vertical mouse to be a whole part and make you wrist lift from the ground and rest on the comfortable pad which protect you wrist from friction when moving the mouse [3 Adjustable DPI]: 800-1000(default)-1600, 3 Gear DPI which would be easily shift according to your daily working requirement by the dotted switch in the bottom. And with sensitive optical engine, providing smooth and precise tracking on a wide range of surfaces [All products include 12 months warranty and free lifetime technical support] [Wide Compatibility]: Compatible with Windows XP, Vista, 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) [ Ergo Vertical Series Mouse] It 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 Ergo Vertical Series, even for left handed person. There are Ergo L(large size), Ergo M(Medium size), Ergo S(Small size) and Ergo Left(Left handed) series mouse for you. Just find your correct one according to your Palm size. [For More Vertical Mouse Details, Please Move to our Brand Flagship Store(there is a store entrance under the listing title)] Ergonomic Vertical Design Ergonomic design is not just for the structure, but for using habit. With special button layout design, thumb groove and rubber coating, let you more easy to use it and offer you comfortable and natural using experience Removable Palm Rest Ergo Button Layout