All Win 2.4G RF Blue wireless USB Mouse for Apple macbook 13" PRO AIR 11" ACER SONY HP... Slim ergonomic mouse is perfect for home and office use; Optical tracking technology mouse works on many different surfaces Mouse is compatible with most laptop and desktop computer models; Easy to use scrolling function and DPI switch Wireless curved mouse connects via USB receiver; Powered by:1*AA battery (battery not included)