More Cool Material The handle of this portable mini fan is made of mostly metal and a small amount of plastic, giving you a cooler feel in the hot summer. Large Rechargerable Battery The handheld fan has built-in large 2600mAh rechargeable battery and comes with a USB charging cable that you can charge via USB from your computer, power bank, laptop, or any other USB port device(full charge takes about 4 hours). Long Working Time With the large 2600mAh rechargeable battery, offers you 4-16 hours of use time(depending on the wind speed you choose), keeping you cool all day long.
