Contoured to perfectly fit a player's hand, the Wii Nunchuk controller goes an extra step to meet the needs of gamers. It features the same motion-sensing technology enabled in the Wii Remote controller, with an analog stick to assist in character movement. Use it to move your characters and have them perform all kinds of specific actions -- whether it's throwing a pass in football or aiming a ranged weapon in an action game. The ambidextrous nature of the Wii controllers grants accessibility seldom seen in game controllers. Specifications: Motion sensor function (3 axes) Two buttons - C, Z Uses the communication function of the Wii Remote Control