Keep cool outdoors with the OneSource Multi-Speed Fan & Rechargeable Battery, which offers high and low settings as well as an adjustable head for targeted airflow. It is part of a system that powers outdoor gear with rechargeable lithium-ion batteries that can be used interchangeably in a range of compatible devices, including lanterns, flashlights, wireless speakers, air pumps, and camping tents, and shelters (sold separately). The lithium-ion battery is conveniently rechargeable from wall outlets, vehicles, universal power packs, or other OneSource batteries with the included USB cord. Bonus? The OneSource battery helps eliminate the need for multiple power sources by letting you charge external devices, like smartphones or tablets (not included), through a USB port, even while powering gear. One system, one source, power anywhere!