Features:USB rechargeable: This is a USB desk fan, compatible with all USB ports such as computer, car charger, power banks.4 adjustable speed: This USB fan has 4 adjustable wind speed, so you can choose the ideal one for your needs.Quiet design: The small portable fan is very quiet at its lowest setting, while it moves a surprisingly high volume of airs. This little guy should help you make the nights a little cooler for sleeping.Application: It is perfect for use in the office, home, dormitory, library, etc.High quality: It is made by high-quality material, which could be used for a very long time.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Material: Plastic.Size: As shown.Battery: 2000mAh (basic-type)/ 4000mAh (remote controll type).Rated power: 8W.Rated current: 5V.Quiescent current: 10uA.Brightness: 14.3-16.87lm.Working time: 6-10h.Light bead quantity: 4.