Cool Dealheroes 2.4G Wireless PC game Mouse For ME/ 2000/ XP/ Vista /Windows 7 with Flame Print 2.4GHz wireless transmission up to 10 meters operating distance 6 buttons, including Wheel Key, Left Button, Right Button, Page up, Page down, DPI Switcher Matte-design on the left & right buttons, and rear area Intelligent connectivity, no need to code, plug-and play Great power saving mode, low power comsuption, the service life of 2 AA Alkaline battery is up to 3 months.(Bettery not included)