Nyko is introducing a wireless nunchuck controller for the Nintendo Wii.

If you have a Wii, you know that the standard nunchuck has to be connected to the Wiimote with a cable. The new wireless nunchuck controller from Nyko gets rid of this cable.
A small receiver unit has to be attached to the Wiimote and the new Nyko nunchuck is powered by two AAA batteries providing 30 hours of play time.
The Nintendo Wii Wireless Nunchuck is available for $34.99 on Amazon.com and will ship on March 25th.

Nyko offers also Cord-Free, which converts your existing original Nunchuck into a wireless one. The Nyko Cord-Free sells for $19.99 on Amazon.com and will also ship on March 25th.