Model : JE8" USB Fan (FREE 2 BATTERIES) (FREE 3 MONTHS WARRANTY) Feature - Convenient to carry, with USB charging. - Rechargeable 4000mAh large-capacity battery, lasting up to 10 hours of battery life. - Curved large fan blade design, uniformly cutting air, powerful wind, variable speed DC, powerful brushless motor. - Stable and periodic variable speed, providing stable and strong power, simulating natural wind, low noise, low power consumption, quiet and comfortable. - Simple button operation, 3 levels of wind speed can be adjusted, click to switch wind speed. - It can satisfy large area of cool air supply - Easy to store, very suitable for home, office and outdoor use. Specification Function: 6W Input Voltage: 5V-2A Battery capacity: 4000mAh Product size: 230x71x310mm Control method: Button Control Charging Duration : 5-7 hours Product Weight : 0.52kg Usage Duration : STRONG > 4 HRS MEDIUM SPEED > 10 HRS Color: Grey & White