Mini fan is of detachable design, and it is lightweigt and pocket-size, easy carrying and using, especially while traveling anywhere at any time. It’s light weight, and easy to store. The blades of the fan can be removed so they will not get damaged during storage. The fans are equipped with IC protective plates, which won’t damage the phone.Android phones need to support OTG function to use. Open fan only 26 decibels, equivalent to the sound of the breeze.