EXTENDED action TIME: Powered by an 1800mAh built in battery with USB power input, allowing prolonged usage without constant recharging during outdoor activities MULTIPURPOSE APPLICATION: Perfect for outdoor excursions, camping, vehicle journeys, and exercise meetings, this compact fan proposals rapid cooling with its 1800mAh electricity source and adaptable air movement EASY TO READ DIGITAL PANEL: The integrated display shows current fan action and power stage information for simple tracking in all lighting environments EASY TO CARRY CONSTRUCTION: With lightweight and space saving design, this unit conveniently stores in backpacks or totally, ideal for vacations, seaside visits, or fitness activities ADJUSTABLE COOLING preferences: Includes 5 preset modes and smooth 100 step variation to provide your desired cooling sensation, from gentle comfort to powerful ventilation