Built in 900mAh battery supports 1.6-5.5 hours of time per charging via USB Enjoy cooling with three adjustable wind speeds ( 13200 / 3900 / 5100RPM) for comfort Features semiconductor cooling fan for alongside standard air Simplify switching between fan / cooling modes The adjustable clip design allows easy attachment to desks, strollers, or bikes without tools Ideal for commuters, travelers, and outdoor enthusiasts, it easy cooling in various settings This USB rechargeable clip fan features bladeless technology for enhanced, eliminating risks from traditional fan Perfect for families with children, it deliver air for home, outdoor use Equipped with brushless motor, this fan operates at minimal noise ( ≤5W), ensuring undisturbed work, study, or rest ABS construction ensures durability and heat resistance for long term use