Small size, big function: Combined with fan+flashlight+emergency power bank function, F8 pocket fan would be a daily essential fan to cool you down in hot weather and is multi-functional to satisfy your various needs. Cooling time from 14 to 21 hours: Up to 21 hours of cooling time on a full charge. Super long battery life lets you enjoy it on the go, commuting, work and any other outdoor activity. This portable mini fan is USB rechargeable via a regular USB outlet, laptop, power bank or car charger. A palm-sized backup charger: Featuring a unique, pocket-sized design, the F8 portable fan is easy to pack into a carry bag. And it's a perfect option as an external backup power bank to charge your phone when needed. Also a flashlight: Designed with a bonus flashlight feature. You may not look for a flashlight at first, but you will find it very useful when you go out for a walk at night. 3-stage convertible fan: Able to be fully folded to hide the blades, makes it small and compact enough to slip into almost any pocket. It is a portable fan when folded 180 and a desktop fan when folded 270.