The difference, apart from the increase in revolutions between each level is to the auditory level.
Everyone finds his account according to his auditory perception.
For one, it is the speed 1, the sound is more serious and slower turns.
For another, it is the speed 2, less serious and some balance of acute and it is faster.
3rd speed is excellent for a room emptied of heat when opening the window at night.
This is a very good product.
Do not ask him to do more than why it is manufactured: ventilate ...
And he does it perfectly.
So although it is not necessary to run it long to ventilate a room and those present.
We can turn it back on from time to time if necessary, without excess, it's simple.
Buttons - Off (white) / speed 1 (light gray) / 2 (dark gray) / 3 speed (black) - are very easy to use.
By being careful with the blades, the disassembly is easy and accessible cleaning quietly.
The fan remains on its axis from the beginning of its use.
If necessary, a tightening is possible to either side, under the rubber protection.
The feet are amortized ground by suitable rubbers.
The ultimate is that this refreshed fan!
And that, it shows how much he ventilates properly.
So I say more?
Otherwise, good winds :-)
