Super Rechargeable Fan: Large 8000mAh battery capacity, the camping fan can provide 8.5-25 hours of working time after a full charge. Brings strong winds while having a longer battery life. (Working time varies with wind speed.) Detachable Fan Blades: Tent fan with detachable fan blades, this travel fan is easy to carry, store and clean. Portable and powerful, make your trip more comfortable, ideal for camping Remote Control & Timer: This battery-operated camping fan has a remote control that allows you to easily adjust the fan speed and timer while you are lying on your dorm bed or in your tent. In addition, there are 4 optional timer modes: 2/4/6/8 hours. 4 Wind Speeds: The portable fan has 4 wind speeds to meet your different cooling needs during hot days and nights. (Low/Medium/Strong Natural Wind). This USB fan tent can work continuously for 25/16/8.5 hours at 1/2/3 wind speed. Wide Range of Uses: The outdoor fan with a hook on the top allows you to hang it on a tent, tree branch