【Ultralight and Portable】The small Whirlwind USB fan is compact and extremely lightweight, only 0.16 kg, which means it won't burden pockets or bags.【Long Lifespan】The portable fan has a built-in high-capacity 900 mAh polymer battery. With 3 wind speeds, it can operate for up to 6 hours without the motor overheating.【Innovative and Unique Design】This ultra-portable mini fan has a 360° rotatable clip for multifunctional use. The mini fan is very flexible. The clip can be attached anywhere.【Quiet and Powerful, Ultra-Safe】The fan is equipped with a bladeless fan, which significantly reduces noise. With a sound level of less than 25 dB, the small fan is barely audible. Thanks to the bladeless design, you don't have to worry about your hair getting tangled in the fan.【Summer Assistant】Whether it's in a stuffy office, attach it to your collar for subtle cooling without disturbing your work; or during an outdoor picnic, hang it around your waist so you have your hands free to enjoy your leisure time.