They can be used on ALL Nintendo Wii Game consoles. They areuniversal regardless of where your console is from. 

The Nunchuk builds on the simplicity of the Wii Remote and goes anextra step to meet the needs of specific types of games. TheNunchuk connects to the Wii Remote at its expansion port and isused in conjunction with the Wii Remote. 

Along with the analog stick, the motion-sensing Nunchuk alsocontains two buttons positioned for quick access. Because the WiiRemote and Nunchuk are only relatively dependent on each other,players are free to hold them in whichever hand is mostcomfortable.