, ERGONOMIC DESIGN - A right-handed vertical mouse that promotes a natural handshake position while using to prevent twisting the forearm while using and reduce muscular strain and repetitive strain injuries (RSI) , ADJUSTABLE TRACKING DPI - High precision optical sensor that can be adjusted with 1000/1600 DPI resolution , EASY TO USE: Easy access to multiple usage through 6 buttons. Instinct two-level sensitivity adjustment of the most widely-used 1000/1600 DPI setup , NO NEED FOR BATTERY: Plug and Play mouse with USB 2.0 interface, easy to start to use with standard setting function. High quality rubber coating surface gives it a feel-good touch , COMPATIBILITY - Windows XP, 7, 8, 10. weights 0.35 lb, cable is about 1.8 meter ,