USB Mini Fan Portable Rechargeable Desktop Fan Powered by USB and A 18650 Battery Mini Air Conditioner Ideal for Summer Travel Walking (White) Different ways to charge fan with lithium battery in: connect micro USB charging cable via computer/notebook, car charger, power bank, 5V wall USB charger etc. Rechargeable Battery Power Supply, one 18650 cylindrical battery can power it. (Battery is not included) 3 mode adjust, which couldhelp you to enjoy both soft and strong wind at 3 speed freely. Multi-functions integrated, including charging indicator, speed indicator, and LED light torch. Fashionableappearanceandhumanorienteddesign,makeitnotonlyusefulbutalsoattractiveandcute.