1. Super Long Endurance and Strong Airflow – Featuring advanced technology, this fan operates for up to 14 hours on two speed levels and up to 21 hours on one speed level after approximately 3 hours of charging. The maximum fan rotation speed is 3400 rpm, providing sufficient airflow for personal cooling. 2. Foldable Design and Compact Size – The foldable structure allows for easy portability and storage. With an oval shape measuring 1.3 x 1.3 x 4.7 inches and weighing 4.4 oz, this rechargeable fan conceals the blades and easily fits into pockets or purses. 3. Power Bank Function and Quiet Operation – Equipped with a 5V/1A USB-C output port, the fan doubles as a power bank with a 2000mAh capacity, capable of charging mobile devices in emergencies. The frameless design helps maintain a low noise level of approximately 50 dB, making it suitable for quiet environments. 4. Built-in Flashlight and Included Wrist Strap – Press and hold the power button to activate the flashlight when the fan is off. The bright LED light is useful in low-light conditions or during power outages. A wrist strap is included for convenient carrying on hands or backpacks. 5. USB Charging and Fast Charging Capability – Compatible with wall chargers, laptops, or power banks for charging. The handheld fan requires only 2 to 3 hours for a full charge.