Hands-Free DesignHelmet with unique design, perfect for freeing your hands. The double-headed fan is also equipped with a 7-color LED light. The rainbow lights are cool at dusk. night and are perfect for runnersat night. 3 Speeds & 360 RotationThe 3-speed adjustable USB fan can adjust the most comfortable winds as you like. With a unique curved design, the two mini fan heads can be rotated 360 degrees, so thatyou can enjoy the cool wind from any angle Long Running Time & USB ChargingBuilt-in 2000mAh lithium battery, our portable fan can be charged repeatedly via the USB charging cable. Depending on the air volume, it can be used for about 3-8 hours.If the battery is exhausted, you can charge it at any time. Because it is compatible with most computers, laptops, mobile power supplies and other devices with USB output Wide Applicationlightweight, small personal cooling fan for easy carrying and storage, design