Salient features of Wired Nunchuk Controller For Wii: 
Connect the nunchuck controller to the Nintendo's Wii remote and get ready 
Nunchuck controller and accelerometer contained within it are the next leap in gaming 
In first-person shooters, controller carries the burden of movement, freeing you to aim and fire using a more natural motion with Nintendo's Wii remote 
In a football game, you can make your quarterback elusive with nunchuck controller while you look for an open receiver to throw to using Nintendo's Wii remote 3-axis motion sensing (like the Nintendo's Wii remote) 
Features the "C" and "Z" buttons as well as an analog stick 
Frees you to aim and fire using a more natural motion with Nintendo's Wii remote 
Take two-handed control of your games 
Connects directly to Nintendo's Wii remote, using Nintendo's Wii remote's communication and power functions