SHARKK&reg; Wireless Gaming Mouse 2400 DPI High Precision Optical Mouse for PC, 9 Buttons, 12 Month Battery Life. Featuring a 2.4G wireless connection with an operating range of 30+ feet High precision laser technology with five dynamic CPI settings: 800/1200/1600/2000/2400 9 pre-programmed function buttons (Buttons NOT customizable on current model) Energy saving design allows for up to 12 months of battery life LED back-lighting for the ultimate gaming experience