WIOR Rechargeable Fans Portable Handheld Fan Battery Operated Cooling Fan Electric Personal Fans Foldable Fans with 18650 Battery (Black) NOTE: PLease remove the PLASTIC FILM of the battery before charging. And fully charge the fan before using. The advanced power management technology provides a variety of power supply. Use USB directly or battery-powered 3 Modes. Efficient power and conversion circuitry can minimize the loss to save energy and protect environment. A hand held mini fan for cooling. 18650 international standard high-capacity battery provides long life and strong power output. Blows smoke and smells away. Suitablefor traveling in hot weather.