The sound is very small? the noise of <22 dB

Because the motor which is used in long life and low noise?

Electric shaver and Philips of motor with the same motor? long service life? small voice

Toy motor is better than common many times

Finally? said a technical problem? is the blade angle of fan

Because the soft leaves? so it is easy in the transport or use of the pressure variable

The user when in use? can be directly used hand wring?

Adjust the blade angle of view? the situation correctly? can get the maximum windand minimum noise