I received a black wii motion plus controller. The model numbers seem to be correct...RVL 036 but the one thing that makes me think it is a fake is that the battery cover has a sync button on it? Wait what? Is this a fake or just a replaced back cover?
If your battery cover has an exposed sync button, then you probably have the newer model that allows for easier sync button access. If so, the strap should also come with a little nub to push on the button without having to take the cover off.