Wireless 2.4 GHz connection for flexibility and mobility 1000 dpi laser sensor offers HD tracking for precision control Convenient two-button scroll wheel design works equally well for both right-handed and left-handed users Plug-and-play installation so you can be up and scrolling fast Compatible with: Mac OS, Vista, Windows 7, Windows 8, Windows 8.1, XP Dimensions: 97 x 58 x 33 mm Weight: 80 g