about this project [Lightweight and Portable Fan] - The size of the handheld fan is about 7*4.5*14.5cm, and the weight is 0.2Ib, very portable, not heavy to carry, the lanyard design frees your hands, very suitable for travel, hiking, camping, outdoor activities . [High Performance Battery] - The mini USB fan is powered by a built-in rechargeable, charging for 2-3 hours, providing 2-4 hours of continuous use. This handheld fan comes with a USB charging cable, you can charge it through a normal outlet, computer, car charger or any other device that has a USB port. [3 Adjustable Speeds] - The handheld fan has 2 adjustable speeds, you can control the fan speed by pressing the power button repeatedly, the maximum speed can reach 8200RPM, the mini fan has strong and long-lasting wind, which can keep you in the hot summer Cool and comfortable. [Foldable Handheld Fan] - This mini portable fan can be folded up to 180 degrees, it can be used as a handheld fan when you are outdoors, and a mini desktop fan on your desk when you are in the office. Suitable for summer travel or outdoor sports. [Strong Wind]- Equipped with 5 fan blades, enough to support the blades to operate at super high speed to generate strong wind, this fan can generate strong airflow and cool you down quickly.