Spritech(TM) Optical Slim Battery Powered Wireless Mouse with Nano Receiver for Laptop Desktop Netbook PCs Our wireless mouse also has three standard buttons: left, right, and scroll Our wireless mouse does not require any software and is compatible with Windows98se/WindowsME/Windows2000/WindowsXP/Windows2003/Mac 2.4 GHz wireless transmission to provide up to 10 meters operating distance Rated working voltage: 3 V, rated power: 13 mA Nano tiny receiver,intelligent connection technology,needn't to code the , plug and play.