Small Size, Big FunctionCombined with fan+flashlight+backup power bank function, the handheld fan would be a daily essential fan to cool you down in hot days and is multi-functional to satisfy your various needs .14-21 Hours Cooling TimeUp to 21 hours cooling time on a single 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 regular USB outlet, laptop, power bank or car charger.A palm-sized emergency chargerFeaturing a unique design and pocket, the F8 portable fan is easy to store in a carry bag. And it's a perfect option as an external backup power bank to charge your phone when needed.Also a flashlightDesigned with a bonus flashlight function. 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. 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. Note: The data are all manual measurement, please allow some error 1 - 3cm, due to the light and display difference, there will be some color difference, depending on the physical object received.