[USB Charging]The portable fan has a built-in high-capacity 3000mAh lithium battery, which can work for 5.5-10 hours after fully charged. You can charge this mini battery powered fan with any USB device as it is compatible with all USB ports. [Five-speed adjustable one-button design]Compared with similar products in the market, the small fan has been innovatively upgraded to five-speed wind speed to meet your needs in different occasions. In addition, the one-button design allows you to switch between different wind speeds by pressing the button, and turn it off by pressing the button for three seconds. [LED Display]The fan is equipped with a digital display, which can display the current wind speed and battery power when it is working. In addition, the mini fan's battery level indicator can also remind you to charge the mini fan before it runs out of power. [Quick Cooling & Detachable Fan Guard]The USB fan features five blades to maximize airflow for cooler, softer wind. Plus, the detachable fan cover allows you to easily clean the fan to avoid dust buildup that can cause allergies. [Low Noise & Portable]High quality pure copper motor reduces friction noise and provides strong wind with lower noise level. The hand-held fan only weighs 190 grams and can be carried with you anytime, anywhere. You can use it as a hand fan, as a neck fan by simply hanging it around your neck when you're out and about, or as a desk fan while you're at work. [Package Contents]: 1*Handheld small fan