Can be charged by USB phone charger, laptop, computer, power bank and other USB-enabled devices. The Mini Fan has 6 adjustable speeds from soft wind to strong wind by a button. Built in 1200mAh Rechargeable battery with high-performance and efficiency,Our Portable Fan can work over 10h in one charge and keep you cool for a long time. With strap and base,the foldable fan can be used as a handheld fan outdoor indoor, a personal desktop fan in office or a hanging neck fan by a lanyard in package to free your hands. You can make the fan stand on the table by the base or folding the fan handle. This is a versatile fan that can meet your any need. With detachable front cover, the hand fan is easy to clean and bring you a clean and cool wind.