Adesso 3 Button 2.4GHz Wireless Desktop Optical Mouse -  Windows 8/ 7/ Vista/ XP/ 2000/ MacOS X (iMouse M10) Work Freely with No Limits on Space, Angle or Distance With 2.4GHz RF wireless technology and 65000 IDs on 12 channels you can enjoy 30 feet of wireless freedom. This mouse features an optical sensor that improves speed, accuracy and reliability without hassle of clogged mouse ball. With the Auto-Sleep feature you can automatically maximize your battery life when mouse is not in use. Windows 7/ Vista/ XP & below, Mac OS X & below