Gamecube Wavebird Wireless Controller Grey, Silver, Compatible with Wii Control your favorite games from up to 20 feet away -- the RF transmitter send signals to a Receiver that plugs into your GameCube Up to 16 different Channels can be set -- set up as many as four wireless controllers, for massive multiplayer action Works on 2 AA Batteries that provide up to 100 hours of gameplay for each controller (not included) Includes WaveBird Wireless controller and receiver