It was hot in the office and it had to be a solution. Therefore I have decided for this fan. Slightly confused, because it still had some negative opinions, I have built up the fan ... and lo and behold ... all great! Ok, there is no wind machine that runs at 220 V, but a small desk fan via USB! Who believes to create 3 Beaufort via USB, should again look at the conservation of energy (physics 9th grade) or simply put: Without Mampf no fight! The fan is extremely quiet (the sounds of an open window on a side street drowned him) and about 1,5 meters away you can feel a slight but cooling breeze. If he had more I would even feel him almost disturbing. Its dimensions are about as wide as two coffee mugs and not quite twice as high and are perfect for a desk. So he finds between the usual desk accessories into place. I am very happy with it!