plastic air battery power portable cooling travel handheld usb small mini rechargeable fan

1. Portable, can be used everywhere, when in office, at home, in bed, or outdoor all can use this fan. 
2. Use rechargeable battery, no need electricity, no restrict. 
3. Super strong wind, low noise, small size but can cool down effectively. 
4. With 3 gears, low, middle and high gear, different wind force. 
5. With LED light, can light on when in dark environment. 
6. Chirdren can use, their fingers can not put into the screen. It's safety. 
   7.The battery can use 2.5-8.5 hours in difference gears when full charged.
   Parameter:
   Adjustable gear Three adjustable gears
   Input Voltage DC 5V
   Output Voltage DC 5V
   Input Current 0.5A-1A
   Output Power 4W
   Battery Voltage 3.7V
    Dimensions 140 x 102 x 42 (MM)
   Net Weight About 150g without battery
   Service Time About 1.5 hours for Gear 3;                          
   About 2.5 hours for Gear 2;                  
   About 3.5 hours for Gear 1;

Wind force from 
1M away > 3m/S
Full set including A host machine, a charger line, a piece 18650 battery