Wow-Win rechargeable fan is very easy to use with high quality materials, Built in large capacity lithium battery. Support external mobile power operation, standing and desktop model, suitable for different occasions, also support 18v solar power. 10-20hours upward operating time, AC/DC power option 17.2 Inches Solar Rechargeable Fan has been designed to make life better and comfortable for you and your family when the outside temperature is extremely high