Big Hero 6 Ultra Slim Fashion Touch Bluetooth 2.4g Wireless Mouse Compatible with PC, Mac and Ultrabooks. Windows XP, Windows 7, Windows 8, Mac OS X v10.4 or later It's not only a mouse, it's a fashion gift (Big Herro 6) for use at home, in the office or on the road It's so intelligent in auto power off when you don't use it and auto wake up by a click when you start it. You never worries about forgetting turn it off/on. It saves and using a low battery. High quality mouse for lifetime using. New Technology - 2.4GHz technology reduces cordless interference and 1000 DPI sensor. Powered by 2 AAA batteries (not included).