It constantly needs you to adjust the air. It's not for women because they won't be able to operate it and will keep asking for help with adjustments. You leave it running, go away, and after a while, it might turn off. The pot doesn't sit on top; it's for large pots

Good for its price.
The lack of an instruction manual is a basic issue.
How can you imagine that you have to move the aluminum collar while it is lit, in order to achieve proper combustion (blue flame with a characteristic hissing sound and not red), after it makes a small explosion.

Impressively powerful, the oil reaches temperature in 3-4 minutes. During the first heating, the color peeled off, but it doesn't bother me as long as the metal underneath proves to be sturdy.
When I bought it, I didn't realize how big it is, 40x40 centimeters is too large for the purpose I want it for. Nevertheless, it does its job very well.

It produces a yellow flame, which it shouldn't. Everything turns black, the utensils, the surroundings... The assembly was very difficult, some parts didn't fit properly and we had to bend an iron to make it fit. However, it is very powerful.
Edit: The problem with the yellow flame was solved when we moved the silver "lid" next to the valve. This allowed more air to pass through and prevented incomplete combustion.