Mainstays Rechargeable Foldable Fan with Lighted Power Button features with a versatile handle converts to standard or hang or folded for easily store in a bag. It s equipped with a high-capacity 5200mAh rechargeable lithium-ion battery guaranteeing 17 hours of operation at the low setting. And there are three speeds for different cooling demands.Rest assured this battery is fortified against overload and short circuit ensuring your safety and the longevity of the device.