Working time duration: This 2000mAh battery powered fan can work between 2 to 7 hours depending on its speed (3 adjustable speed level: speed 1 last 7 hours, speed 2 last 3 hours, speed 3 last 2 hours). Charging time: 3~4 hours Multifunctional and Dual Stand Design: With foldable and telescopic design, our mini fan can be used as table/desk fan or mini handheld fan. The top mount is flexible and fits smartphones within 1cm thickness. Portable lightweight design: When you go out, you can put the our mini handheld fan in your bag with you, especially suitable for summer travel or outdoor sports, you can take it anywhere, such as NBA/World Cup qualification/football game or any activity . 24 Degree Rotation: Our rotation fan swings and angles up or down - both actions can do 24 degrees. Just adjust the angle to the compatible angle you want. 5 fan blades give you a strong wind cooling sensation. More detail: The "Power on/off" button is surrounded by LED light, then you will realize how much electricity is left. 5 pieces of soft blade provide comfortable breeze, but not much noisy sound, just like wind. Can work and charge with USB charger, laptop, computer, power bank and other USB enabled devices.