1. Small and lightweight, easy to carry with you.Perfect compatible with use when studying, working, cooking, waiting compatible with train or bus and more. 2. Built in 800mAh large capacity battery, support up to 2.5 hours compatible with use. Rechargeable design avoids frequent battery replacement, convenient power supply. 3. The noise produced during working is low, quiet and comcompatible withtable, whether office,classroom,library, you do not worry about it will have influence on other persons. 4. Perfect compatible with indoor and outdoor use, the personal fan can produce natural wind to keep you cool when reading, doing sports, waiting in line and travelling, it would be your best partner in such hot summer. 5. With type-c charging interface, it can be charged via desktop, laptop, USB socket, and power bank.Specifications:Battery capacity: 800mAhInput voltage: DC5V/1AWorking current: 83-350mAUse time: about 2.5 hours Use power: 0.33-2.7W Colour:Green Material:ABS+electronic components Size:21.6x76.3x180mm Package Contents:1 x fan Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.