5000mAh 11-20h Working Time: The battery life of the handheld fan is unbelievable, and it can run for more than 20 hours on low speed without any problem when sleeping on a hot night. The maximum wind can also last for more than 10 hours. Fully charged in 3 hours, the LED screen displays the power and wind speed in real time, so you don't have to worry about suddenly stopping work, and you can monitor the power at any time. 5 Levels Adjustable SpeedThis portable fan has 5 levels of intensity, the great little fan produces a breeze on the lowest setting and a hurricane on the highest. Control sleep wind/natural wind/fresh wind/cool wind/hurricane as you like. Mini Quiet FanWeighing only 190g for your mobile phone, it is so small that it can easily fit into most handbags. Ultra-quiet engine design, all you hear is a faint hum that won't keep us awake. Multifunctional Small FanEquipped with a detachable base as a mobile phone holder, supports 90-degree adjustment as a desk fan, and a detachable lanyard as a neck fan. Especially suitable for summer travel or outdoor sports, you can take it anywhere, such as party/camping/football game/or any event.