Honest little camera, I bought it for 75 euros, I believe that for this money you won't find anything better. Quite good clarity, it doesn't have good stabilization like a GoPro. But it's decent for underwater shooting. The handling is very simple, with the front button you switch between video and photo. With the same button held down continuously, you turn it on/off. I'm including sample videos (1080p with 120fps recording)
https://www.youtube.com/watch?v=jvJuiqMuyGE
https://youtu.be/4x-QwnQLZYw
https://www.youtube.com/watch?v=3LrJMl7T6rw

I mainly use it for snorkeling, free diving, and mountain biking. The video clarity is quite good for its price, although it shakes a bit when I'm on the bike in the mountains. However, it has decent stabilization for its price. Of course, you can't expect anything better with less than 100 euros. When I pushed the battery hard, it ran out quickly and generally didn't last more than 180 at 120 fps, which is the maximum for me to have clarity. I recommend it to people who want to use it underwater if they don't want to spend more than 100 euros. For cyclists and motocross riders, there may not be as many options, but you may be able to find one with slightly worse video quality but better stabilization

I use it for diving.

Very good image quality (for its price) even at 40 meters!

I am quite satisfied.

2 little things.

The battery is not as powerful as I would like.
Secondly.

The case holds up well up to 20 meters.

Below that, it will hold, but ONLY if you don't press any buttons.

Meaning, after 20 meters, I do not recommend taking photos.

What I do is, right before I turn it into video mode, I don't press any buttons and it remains waterproof up to 40 meters.

Overall, for the money I spent, I am quite satisfied.