http://www.gadgettown.com/Nintendo-Wii-Nunchunk-Game-Controller-White.html
①The Nunchuk builds on the simplicity of the Wii Remote and goes an extra step to meet the needs of many specific types of games, It connects to the Wii Remote atits expansion port and is used in conjunction with the Wii Remote
②Players are free to hold them in whichever hand is most comfortable