Looking for a compact and reliable mouse that works wirelessly without the tangle of wires; Then the Logitech Wireless M235 Computer Mouse is perfect for you. This battery powered mouse (included with product) is simple to use with two buttons, USB connectivity and optical sensor making it an ideal practical home office accessory. Compatible with Windows XP, Windows Vista or Windows 7. Mac OS X 10.5 or later and Linux kernel 2.6+ USB port. Includes mouse. Optical sensor. Nano receiver. 2 buttons. Scroll wheel. 4 way scroll. Battery indicator light. Approximately 12 months battery life. Batteries required 1 x AA (included) . Manufacturers 3 year guarantee.