Key features Comfortable, full size 6 button mouse with 1000 dpi high precision Blue Spot technology Accurate & high precision Blue Spot sensor that works on virtually all surfaces like wood, granit, carpet, black, white etc. Special button to switch sensitivity for normal (500 dpi) & high speed (1000 dpi) movement Ergonomic design with comfortable rubber inlay for a firm grip Side buttons for easy Internet exploring (page back/forward) & gaming Just plug & go; no need to install a driver Package contents Mouse User's guide System requirements USB (Universal Serial Bus) port Windows 7, Vista or XP Intel-based Mac with Mac OS X 10.5 (Leopard) or higher