USB RECHARGEABLE With a buil-in rechargeable battery Once fully charged, it will provide almost 5 hours long working for time Can be charged by, laptop, computer, car charger, usb cable SAFE AND POWERFUL, Porable and Great for travel, school, library, games room, camp, outdoors SELF-STANDING TABLE FAN The adjustable 210° tilt angle gives you even more control of at your bedside table or desks Easily be moved around the home THREE GEAR WIND AND LOW NOISE This table fan is equiped with 3 turbofan and a brushless pure copper motor Lower noise below 30 decibels while increasing the air volume 3 Low / natural / strong wind Gently press the button to adjust different SMALL AND PORTABLE The electric desktop fan size 7.72 ' ' x 7.72 ' ', small and compact for Ideal for bedrooms, dining rooms, offices, garages,, and dorms