LANGRAY Handheld Fan, usb Rechargeable Portable Mini Fan, 5 Speed Small Pocket Fan with Base, Foldable Table Fan with 4200mAh Battery for Office Outdoor, 1

【USB Rechargeable】With built-in 4200mAh high capacity lithium batteries, 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 as it is compatible with all USB ports. 【Five adjustable speeds and one button design】Compared to similar products on the market The small fan is already innovatively upgraded to five wind speeds to meet your needs in different occasions. Besides, the one-button design allows you to switch between wind speeds by pressing the button and turn it off by holding the button for three seconds, depending on the current wind speed and battery level when it is running. Besides, the small fan's battery level indicator also serves as a reminder to charge it again before this mini fan runs out of power. 【Fast Cooling and Removable Fan Guard】The USB fan has five blades that maximize airflow for cooler, more even wind. In addition, the removable fan guard allows you to easily clean to avoid allergies