USB Office FanUSB table fan is very suitable for office and home. It can be used by computers, laptops, power banks, USB chargers, mobile phone adapters, car charging ports, etc. Stepless SpeedUnlimited wind speed, the mini table fan offers smooth variations of wind speed, it rotates up to the maximum wind speed. High Efficiency and Low Noise Table fan is equipped with the latest upgraded brushless motor and turbofan blades, which does not It only increases the service life, but also achieves the optimal balance between noise and wind speed. While providing you with comfort and coolness, it also provides you with a quiet environment. Material: abs, battery model : 3 lithium battery; Battery capacity: 7,800mah; Gear: fourth gear, with light, shaking head; Input voltage: 5v input current: 200mah - 1200mah output power: 1w - 6wlad power: 0.5w - 2w charging interface: type - C charging time: about 8 hours; Number of battery cycles: 300-500; Using time: the lowest gear is about 25 hours, and the highest range is 7 - 8 hours. product size: 35 * 14.5 * 22cm, Folding height of the stand: 24.2cm packing size: 17.7*15.2*25.3cm product net weight: 621g;