I've seen at least 5 versions of Wii remote and they all came from china - exactly like original ones.
- all have the simple strap like the first wiimotes had
- some don't have any markings on them (like Wii on the front, nintendo embossed on the battery cover and some codes on the side)
- some have Wü marked on them or on the box
- others look exactly like original ones but the remote is named shiro on the box; those are the best working copies although some of them have a crackling noise if you put your ear on the wiimote.
All work satisfying, none was found non working from what I have seen. They have the same components so I bet they are side productions made after the originals, all in the same factory.