" Battery Life and Short Charging Time?: This handheld fan works for 21 hours when setting 1 and 14 hours to setting 2 after 3 hours of full charge, so you can enjoy a fan all day during outdoor / indoor events. ??Foldable and portable?: The foldable design makes it easy to carry and store. USB Fan and Touch Blade?: This personal fan can be charged by computer, portable charger, and USB power adapter. The blades are very safe. If you accidentally touch the rotary blades, the soft blades will stop automatically and keep you safe. Power Bank and Flashlight?: 5V / 1A USB output port makes mini fan power bank (2000mAh) in emergency situations, provide power to mobile phone, manual flashlight is very bright and can be useful in dark areas or in case of power failure."