The function is also very good. I have a GoPro HD Hero 2 mounted thereon with waterproof case and the camera is taking water, but the bobber looks good half out of the water. So he can be even when a slight current are bound to find good.
The price is actually too expensive. I think with the part 20 would be well paid. Judging by all the alternative products, the price is however again fully okay, because the original Floaty Backdoor costs 20 and a bracelet for the Gopro to 40. Both together therefore come to 60 and because of the bobber is then but more universal and it is only a part.
So overall 4 stars because of the increased price.