Features:Advanced Bluetooth technology eliminates the need for a separate receiver.Optical mouse with high resolution up to 1000dpi .Wireless range up to 10 meters (3.3ft).Sleep mode and On/Off switch for saving energy.Ergonomic design， very comfortable to use.Compatible with windows 98， SE， 2000， XP， Vista， windows 7 and server 2003.Works with Mac OSX v10.2.6， only if your MAC has Bluetooth function.Please take a Bluetooth dongle first if your computer does not have Bluetooth function.(Bluetooth dongle is not included)Comes with 1-year warranty.Specifications:Color: BlackMaximum resolution: 1000dpiWireless range: 10mPower supply: 2 * AAA alkaline batteries (batteries are not included)Dimensions: 9.3 * 6.3 * 3.8cmWeight: 56gPackage size: 22.5 * 15 * 7cmPackage weight: 110gPackage Contents:1 * Bluetooth MouseHow to connect Bluetooth?When search for bluetooth， you need press two buttons，right and left at same time until find bluetooth.