High Capacity six Liion batteries builtin 11.1V mAh in total that can support 750 hours continuous working.12 Gears Wind power can be adjusted from breeze to strong to meet your different demands.USB Output it comes with a usb port that can be used as a power bank for your phone power supply outdoors.Solid Design the whole body of the fan is made of aluminum alloy and the wind angle can be adjusted 360 degrees rotation..