Large Battery Capacity: 4000mAh large battery capacity, the portable fan provides 3-10 hours working time on a full charge in just 7-8 hours charging time, which is enough for all-day use. daytime. You can easily charge it via USB power adapter or computer. (Working time varies with different wind speed ratios.) Remote Control and LED Lights: Compared with traditional fan, our portable fan comes with wireless remote control, no need to stand up or stretch your arms to adjust the fan, so convenient for busy hands. Built-in 4 LED lights, safe and comfortable in the hot night. Quiet & 4 Wind Speeds: 4 wind speeds are offered to meet your different cooling demands on hot days and nights. (Low-Medium-High-Natural Wind). It adopts upgraded brushless motor, small quiet fan blades circulate strong airflow wherever you want, quietly create low noise (30db minimum), effectively reduce the effect of fan use on your sleep the night. Removable and Small Footprint: Removable blades and grille design and easy and convenient to wipe and clean. It can be placed on the desktop at will without taking up too much space. With hooks on the top, it can also be hung anywhere in the house as needed. Versatile Use: It can be used indoors as a mini desk fan with LED lights for studying, work, read, etc. It can also be used at night to light up the whole night. It's also a small ceiling fan with a remote control, hands-free to use in the kitchen or hang anywhere for cooling. It can also be used for camping, fishing or hurricane season.