*2.4GHz Ergonomic wireless mouse with 4 buttons. *Includes high precision roller and optical accurate positioning. *The ideal mouse for all your daily tasks at home or office *Nano USB receptor *Working distance of up to 10 meters *800/1200/1600 DPI resolutions *Dimensions: 111 x 80 x 30mm *2x AAA battery (not included) *Compatible with most Operating Systems