Key features Full size, 6 button wireless 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. 2.4 GHz technology for smooth movement & 6 meter range Ultra small USB (Universal Serial Bus) receiver: Plug it in once & never take it out again Special button to switch sensitivity for normal (500 dpi) & high speed (1000 dpi) movement Ergonomic design with rubber coated edges for a firm grip Side buttons for easy web exploring (page back/forward) Just plug-in & start: no driver needed Package contents Mouse USB (Universal Serial Bus) micro receiver 1x AA battery 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