4-Speed Adjustment & Ultra-Quiet
Low/medium/high/ultra-high wind speed level, 4-speed wind speed design, providing you with more choices in different temperature environments. This rechargeable fan has more thrust, faster cooling, and has good noise handling capability, even if it provides strong wind, the noise is less than 50dB, suitable for work and sleep. NOTE: Press to turn on the portable fan, press the button for 3 seconds to turn off.
With 4000mAh battery fan
Large battery capacity, only need to charge for 5 hours, the fan can work for 15 hours (one speed), 4000mAh battery or USB power supply. Four power indicators on the mini fan can remind you of the power level.