Portable fan, USB rechargeable, 5 speeds with base, 4200 mAh battery, foldable, for office and outdoor use (green)

【USB Rechargeable】With its built-in 4200mAh high-capacity lithium battery, this portable fan can run for 5.5 to 13 hours on a full charge. You can charge this mini battery-powered fan with any USB device, as it is compatible with all USB ports. 【Five Adjustable Speeds and One-Button Design】Compared to similar products on the market, this small fan has been innovatively upgraded with five wind speeds to meet your needs in various situations. Furthermore, the one-button design allows you to switch between wind speeds with a single press and turn it off by pressing and holding the button for three seconds. 【LED Display】The fan features a digital display that shows the current wind speed and battery level while in operation. Additionally, the battery level indicator also serves as a reminder to recharge the mini fan before it runs out of power. 【Fast Cooling & Removable Fan Cover】This USB fan features five blades that maximize airflow for a cooler, gentler breeze. The removable fan cover also allows for easy cleaning, preventing allergies caused by dust buildup. 【Low Noise & Portable】The high-quality pure copper motor reduces friction noise and delivers a powerful breeze at a lower sound level. Weighing only 190 grams, this handheld fan is incredibly portable. Use it as a handheld fan, a neck fan by simply hanging it around your neck when you're outdoors, or as a desk fan while you work.