Rechargeable Battery Powered Fan, 20000MAh Personal Desk Fan, Portable USB Table Fan, Timer Off Quiet Desk Fan (Blue)

20000mAh large capacity battery. When fully charged, it can work in low-speed mode for 200 hours. You can check the remaining battery level according to the prompt light., When you experience a power outage or emergency, this personal fan can act as your power bank. Through the USB interface, you can charge your phone or use an emergency light source., When you need a cool breeze to help you sleep. You can use the timer function of the table fan. Set to turn off after 2 hours to 4 hours., This desktop fan can be set to 3 fan speeds. Low wind speeds can reach 2.4m per second, high wind speeds can reach 4.5m per second strong winds. The fan can be rotated vertically 350°. The working time is 15-200 hours., It's more than just a desktop fan. It also has the function of a power bank. Suitable for many places