Sound true measure:

    Measured Noise Figure: minimum amount of wind， 46db (decibels) the maximum amount of wind， 56db (decibels)

           One PS: normal human voice: 75db - 90db (decibels)

            PS II: sound general air-conditioned environment: 51db (decibels)

   No leaf fan of the sound is perfectly acceptable， the smallest unit of 46.4 db; highest gear is 56 db， belong quiet area (of course， if it is particularly sensitive to the requirements of sound completely mute silent then as now technology really is can not， and if so， then as a manager， I also recommend that you carefully shot to avoid trouble or random return to us the difference in assessment!) Currently this bladeless fan quietest on the market， the largest amount of wind No leaf fan， you can achieve the maximum amount of wind 7.6 meters per second， the equivalent of five wind. In such a large amount of wind up to 56 db wind can do， it has been quite good.

     "Bladeless fan" fashion， on behalf of life quality requirements. Compared with "leafy" in the safety， comfort， environmental protection and energy， easy to clean and easy storage and other features become the first choice for many consumers.