four in 1 Wireless Hair Dryer Multifunctional Electric Air Duster Blower Travel Portable USB Rechargeable Negative Ions Blow Dryer Product parameters: Name: High velocity wi-fi hair dryer Shell material: PC Motor type: Brushless motor Rated power: 1500 (W) Rated Voltage: 5V Handle folding: non foldable Overheat protection: Yes Power mode: USB charging Motor: DC motor Wind temperature: 4th gear cold air Wind speed gear: 4th equipment Package list: 1*hair dryer 3*nozzle 1*USB cable Method : 1 the on button about three second,the button mild is blue color,it is standby 2. then click on the button one time(Don't lengthy press the button),it will delivery work,you may perhaps press the button to stwich the equipment