It is of very good quality and generally very accurate, but the controls are tiring because it constantly moves and loses its center, making it generally difficult to use

Really useful for all DIY tasks.
At first glance, it seems to have very good build quality because it has an aluminum body. However, the rotating bubble level inside the body has play, resulting in:
1. When tightening the screw, the position of the bubble changes!
2. With each rotation and reset, it requires recalibration to find the exact position at 0 degrees, for those seeking maximum accuracy.

Indirectly, it also allows you to measure the slope of a construction.
For those seeking high accuracy in long lengths or large surfaces, it doesn't work.
The length it "rests" on is only 67mm, so even if someone calibrates it with a long level, they cannot expect absolute reliability in leveling.

I have it for about two months. As far as build quality is concerned, it is top-notch, you can tell as soon as you hold it in your hands. The vial is clear, the magnets are strong. The issue is with the adjustable degrees. You need to try it on a leveled surface because the arrow does not exactly correspond to the lines, and when you want to level it, the little that it can lose becomes a lot. I do not recommend it because it is annoying to have to test the correct indication every time I need to level it by changing the degrees.