The screen is different from what it shows, better, and the system works just fine. Everything is good. For the money it asks, it is more than good.

I have it in my car. It works properly. The device is very useful and I avoid damages. Apart from parking, because it operates during reverse, it detects stationary obstacles, such as poles, trees, but also moving obstacles, such as animals, bicycles, etc.
The buzzer has a slightly loud sound, but if the speaker is covered with sellotape, it sounds less.