USB rechargeable Built-in 2400mAh large capacity lithium battery, the portable fan can work for 5.5-13 hours when fully charged. You can charge this battery-powered mini fan with any USB device because it is compatible with all USB ports. Five-speed one-button design Compared with similar products on the market, the small fan is innovatively upgraded to five-speed wind speed to meet your needs on different occasions. Plus, the one-touch design lets you switch between wind speeds with the press of a button and turn it off with the press of a button for three seconds. LED Display The fan features a a digital display that shows the current wind speed and battery level during operation. Moreover, the battery indicator of the small fan can remind you to charge this mini fan before it runs out of power. Fast cooling and removable fan cover The USB fan has five blades to maximize airflow for cooler, smoother wind. In addition, the removable fan cover allows you to clean it easily and avoid allergies caused by dust accumulation. Portable low noise High-quality pure copper motor reduces noise of friction and provides strong wind at a lower sound level. With a weight of only 190 grams, this hand fan can be carried anywhere, anytime. You can use it as a handheld fan, simply hang it around your neck as a neck fan when outdoors, or use it as a desk fan at work. Actual quantity delivered : 1 piece