I have used it several times for shots on the camera in strange places and I have worn it out a bit.
It's pretty good and reduces external noise.
It includes 2 covers, one regular cover for underwater use and another one with an opening to use the screen.

I have it for 10-15 days now. It seems very durable and made of good quality plastic. I'm only afraid of how the teeth that we pass the thread through will withstand over time... For example, the Hero 4 black (housing) lasted as long as I have it, which is about 5 summers, and the only thing I paid attention to was rinsing it with fresh water after the sea. I will mainly use it for sea and mountain biking (Enduro MTB).

I give it 5 stars since it is the official rating, but I will come back with a more detailed review after 6 and 12 months of use.

It requires attention when cleaning the lens cover and the screen because they can still get scratched even with the cloth we use to clean glasses lenses. For 50 euros, it shouldn't be so sensitive, at least in this part

Excessively expensive for what it is, 50 EURO for that amount of money you can get a cheap action camera. Obviously, it works perfectly and the construction is of good quality, but I don't know if it's worth buying it if you don't dive deeper than 20 meters. Go to a store and get one for 15-20EURO