smooth Navigation With Less Noise Mouse Click - Slim Ergonomic Design And Smooth Frosted Surface For An Incredible User Experience. Quieter And Easier To Click, Make You Concentrate On Your Work Without Disturbing Others Beside Youplug And Play - Tiny Wireless Receiver Conveniently Slots Into Your Computer's Usb Port, Taking Up Minimal Space. 1 Aa Battery Needed (not Included In The Package).3 Levels Dpi Switchable -800/1200/1600 Suitable For Different Use. Stable Connection And Power Efficient - The 2.4 Ghz Wireless Mouse Provides A Powerful, Reliable Connection, Effective Up To 10 Meters Of Range. This Mouse Will Auto Turn Off When It Is Not Used For Long Time. It Can Be Waken Up By Clicking Any Button.universal Compatibility - Work With Windows Xp, Windows Vista, Windows 7, Mac Os X 10.4 Etc.portable And Durable - Usb-receiver Stays In Your Pc Usb Port Or Stows Conveniently Inside The Wireless Mouse When Not In Use. Perfect For Work And Entertainment In Home Or Office.