Drys faster. Blows air 2~4 times as much as hand dryer to shorten the dry time. More silent. Under 70 dB. Air speed of 8~10 m/s. Auto Swing. The head swings up and down to evenly dry hair freeing human hands. Wide and plentiful air supply. Large air vent. Air volume of 100 cubic feet/minute. Clean air blow. Anti-bacterial filters on both air inlets.