its not an official nintendo one but reviews on the website say that it is just as good.
Unprecedented value! Perfect for all Wii owners
- Works just like the original Nunchuck product -- but not Wii/Nintendo branded (manufacturer did not print explicit Wii branding on the product)
- Features excellent build quality
- Connects to an 3rd party, OEM or original Wiimote
- Works just like the original nunchucks
seems good to me and dealextreme have proven their service is good ive ordered loads of stuff off them and always received my goods in roughly 7 days and free delivery.