In the bathroom, I have installed it and the heating performance is more than sufficient.

It does not have automatic immediate deactivation if it is overturned with a switch, now if it overheats, it will probably have a safety feature.

I do not notice any difference between the 1st and 2nd scale, nor do I see any difference in the air intensity, unless it activates a second resistor and I am not aware of it.

Very nice design, works as a fan for the summer, quickly heats up the 33 square meter space. As for dimensions, it is approximately 30 x 30 centimeters. At the beginning, for a little while (first 1-2 days), it emits a plastic smell. It is worth its money.

Not good at all, don't buy it. It constantly turns off and doesn't heat up the room. It only turns on for a minute and then stops.

Satisfactory performance. Practical handle.
It lights up every 6-7 minutes and stays on for about 70 seconds, so it doesn't work continuously.
As a negative, the cable is small (1.20 meters).
For example, if you want to plug it in the bathroom and the outlet is outside and a little high, then the device doesn't reach the bathroom almost.