Look here we are talking about a 100% rotary machine, not a da, which makes it much more dangerous for beginners. It will cut a lot on peaks, etc.
The system that keeps the speed stable has a very slow feedback and usually overcompensates, resulting in a permanent speed adjustment. Annoying especially if you are trying to maintain your pace.
The foam pad is the worst, it sticks, hardens, and jumps like a goat. It doesn't work.
However, for the 78 euros I bought it, it is relatively expensive. Otherwise, okay machine

The purchase was made on 12/2/19 at the price of 80 something euros... After the period I mentioned, the motor started losing speed, meaning that you would give it some turns and it would catch up after a few seconds. Also, whenever you put it against the metal, it would often stop. I want to clarify that it was bought for a car wash. It did a lot of work with polishes, headlights, etc., but exactly after 1 year, it gave up. The 3 stars might be a harsh review, but they were given for the noise disadvantage and the fact that I didn't expect it to last forever, but not just one year exactly...

The adjustment is made electronically with push buttons, so whenever you close it, you have to readjust the speed from the beginning, and in a short time, the buttons stop working and become dusty

Very lightweight, very powerful, practical carrying case and most importantly, a speed controller with electronic display

For the 50 euros that I bought it, I am very satisfied. At first touch, it appears sturdy and not something cheap. You can electronically adjust the speed and easily change the sandpaper. The only negative thing I have found so far is the noise it makes.