Product description 1.[Ergonomic Vertical Design]: Unique vertical ergonomic computer mouse with special volute bionic design reduce arm discomfort and hand stiffness. 2.[RGB Lighting & Software Setting]: With RGB Chasing lighting, offer you the marvelous working experience (Note: if want to turn On/Off the lights, please find the switch in the bottom of the mouse). With the Memory Setting Driver, all keys programmable, setting the lighting effects mode and creating any macro, just setting and all the setting would be stored. 5 Adjustable DPI: 800-1200-1600-2400-4000 5 gear DPI, which would be easily shift according to your daily working requirement by the dotted switch in the bottom, with 4000 DPI, even could use it as the ergonomic gaming mouse. 3.[Single Blue Lighting & Software Setting]: Blue LED light (Blue solid color), coloring your E-life ( lighting ON/OFF switch is on the bottom). For the Driver, all the keys could be set into different function, even create the macro, but please note that it do not have the memory setting function, if make and use any customization, please keep the driver running. 3 Adjustable DPI: 800-1000(default)-1600 3 Gear DPI, with sensitive optical engine, providing smooth and precise tracking on a wide range of surfaces. 4.[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. 5.[Wide Compatibility]: Compatible with Windows XP, Vista, 7, 8, 10 operating system. Fits for different devices, Laptop, PC Computer, (Compared with traditional mouse, with unique ergonomic vertical design, it may take a few days to get used to using it). Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store