Portable handheld fan, with a lithium battery which can be removed and with a USB line which can be rechargeable easily. With eco-friendly material, it will be healthy. The unique design is ideal for outdoor crowds, and you don't need to worry about the outdoor even when the temperature is too high, because this fan can cool you down. It's absolutely a must-have for the hot summers. This portable hand fan is a USB port rechargeable model. It can be recharged with computer, mobile power, power bank and so on.