Ultimate Muscle:The Kinnikuman Legacy (Renewed)

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)