General description Super Long Endurance & Strong Airflow - This mini portable hand fan features advanced technology, providing up to 14 hours of use on the highest speed and 21 hours on the lowest speed after a full charge of approximately 3 hours. With a maximum rotating speed of 3400 RPM, it delivers strong airflow for personal cooling. Technical specifications Battery capacity: 2000mAh Charging time: 2-3 hours Noise level: 50dB Maximum rotating speed: 3400 RPM Compatibility and accessories USB-C output port for charging Includes flashlight function Includes wrist chain for easy carrying Usage Can be used as a power bank for charging devices like cellphones, MP3 players, or iPods Long press the power button to activate the flashlight function