Mini Neck Fans USB Rechargeable Handheld Adjustable Desktop Fan Function Bank Phone Holder For Outdoor|Fans( ) Function 1.3000mA power bank 2.Phone holder function 2.Desktop use 3.Neck hanging : : green Material: ABS+PC+electronic components+pol batteries Charging input: 5V/1A Working current: 1600MA Use power (maximum): 6W speed: 3500 4000 4500 Charging time: 4 hours Use time:4~12 hoursFunction voltage: 3.7V position: 3 gears Product size: 162*80*17mm Packing size: 14.5*9.5*4.2mm The fan is adjusted in three levels 1.3000mA power bank 2.Phone holder function 2.Desktop use 3.Neck hanging : : green Material: ABS+PC+electronic components Charging input: 5V/1A Working current: 1600MA Use power (maximum): 6W speed: 3500 4000 4500 Charging time: 3 hours Use time:4~12 hours capacity: 3000 mAh Negative ion working power: 1W Working voltage: first gear 7.5V, second gear 6.5V, third gear 5.5V Negative ion concentration: 1000W (test at 100mm) Pack list 1* Mini Fan 1* USB Cable 1* Lanyard capacity: 3000 mAh Negative ion working power: 1W Working voltage: first gear 7.5V, second gear 6.5V, third gear 5.5V Negative ion concentration: 1000W (test at 100mm) Pack list 1* Mini Fan 1* USB Cable 1* Lanyard