... , Features:2.4GHz wireless transmission up to 10 meters operating distance.Intelligent connectivity, no need to code, plug-and play.Ergonomically designed ... 10mOperation systems: Windows 98, 2000, ME, XP, Vista, Win 7 and morePower: 1 x AA battery (not included)Color: Black + Apple ... weight: 51gReceiver weight: 3gItem Includes:1 x Super Mini RF Wireless Optical Mouse USB 1600 DPI1 x USB Receiver ...