2400 mAh battery: Compared to other portable fans on the market, this model is equipped with a 2400 mAh battery (twice as powerful), providing 5 to 20 hours of operation on a full charge. Operating time varies depending on the speed setting: speed 1 (20 hours); speed 2 (15 hours); speed 3 (5 hours). Portable/desk fan: This small portable fan can be used as a handheld fan outdoors or as a small indoor fan on a table or desk. A non-slip mat under the base ensures stability. USB rechargeable: The small handheld fan is USB rechargeable and only needs 3 hours for a full charge. It can be charged with a USB charger, car charger, or computer. Easy cleaning and compact size: With a removable cover, this small portable fan is easy to clean by separating it from the fan by twisting it counter-clockwise. Its compact size also makes it convenient to carry in a bag. Perfect for daily commuting, travel, shopping, picnics, and the office, it will become an indispensable item in summer. Multiple uses: these fans are versatile and widely used. You can hold them as a handheld fan outdoors or use them as a desk fan on a table. The back of the fan is also equipped with a flashlight for added convenience at night. A small handheld fan is ideal for home, office, living room, bedroom, and other indoor spaces, as well as for camping, fishing, hiking, parks, and other outdoor activities.