RECHARGEABLE BATTERY FAN - With the 500mAh rechargeable lithium-ion battery, the small fan is extremely portable as no cable wiring is required and can be used indoors and outdoors. Recharges with the supplied USB charging cable.MULTIPLE CHARGING WAYS - With a wide range of USB interfaces, you can use the USB charging cable to link computers, power bank, laptops and other devices to enjoy the cool wind, wherever that you go.you can use it in your office or carrier to solve hot stuff on the go. Meet your fresh needs throughout the day. Meanwhile, the fanbase can also be used as a cellphone stand for watching videos. LIGHTWEIGHT PORTABLE DESIGN - . When you go out, you can put it in the bag and take it anywhere, especially suitable for summer travel or outdoor sports.