Design: Usb fan. The portable fan has 4 helical fan blades, which can maximize the airflow intensity and blow out strong high-pressure cool wind. 3 speeds can be adjusted, which can meet your different needs in different occasions. High-Performance Battery: Hand fans. The mini fan has a built-in large-capacity lithium batteries, and you can use any USB device to charge the mini handheld fan at any time. It can be used continuously for many hours according to the air volume. Lower Noise: Hand fan rechargeable. We understand that some people are sensitive to background noise, so our product engineers put great effort in studying how to lower the noise in past year and created this hand held fan. Complete accessories: Fans handheld. It comes with a charging cable that can be charged through the USB port of other devices such as ordinary sockets, computers or mobile power. Occasion: Hand held fan. The portable fan is compact and lightweight, so they won't take up any extra space. You can bring this handheld mini hand fan for stroll, sleep, work, shopping or other outdoor activities. And a ideal gift for stylish girls, boys, men, women, and children.