2.4ghz Ultra-thin Wireless Optical Mice / Mouse BLACK with 2 AA Batteries for Pc, Laptop. 2.4GHz Wireless Optical Technology , Interface: USB package contains 1 x wireless mouse, 1 x USB receiver, 2 x AA Batteries. ideal for home or office use, fashionable slim ergonomic design High precision capacity scrolling can enhance your searching speed Compatible with operating system: Windows and Mac, All Laptop or Desktop