2.4G Wireless Car Mouse Black 2.4GHz digital wireless transmission to provide furthest reach 10 meters from the operation 16 automatically switch the work of up to 60.000 channels and the security group of all put an end to foreign interference coding Nano very fine receiver, Plug forgotten, without connecting the Code of intelligent technology Power Supply: 2 x AAA Battery (not included) Button: 2 Buttons + 1 Scroll Wheel