The redelivered fan runs quieter than the originally reviewed, so I had perhaps originally get a defect device indeed.
The air flow is in my opinion in terms of power and size in order that processing affects pretty neat for me. Of particular note is that the device is made essentially of metal.
A small tick quieter could also redelivered device for my taste definitely still be (I would have the full five stars awarded). In ordinary Bureau ambient noise but the fan should well be on the verge of perception threshold.
I want to highlight very particularly positive that sent a free replacement unsolicited on my original negative review out of the dealer (I would not have bothered with a product in this price range, to complain about ..). Such a service I have not experienced in this form elsewhere and want him to emphasize at this point especially. Many Thanks.