[Short-Time Charging, Long-Lasting Operation] Portable fans after 3 hours of full charge, the handheld fan can run for a long time. Soonly need a personal fan you can enjoy an afternoon cool indoors or outdoors. [Power Bank and Small Fan] Hand fans is not only a fan, it is also a mobile power supply. The battery operated fan is equipped with a USB interface, you can use handheld fan as an emergency power supply to charge your mobile phone, MP3 or iPod. [Safety Design] The hand fans for women is made of special soft TPE material with current detection function. If the fan encounters a finger light obstacle during operation, it will automatically stop and ensure your safety. [High Speed, Low Noise] Imitate the fan blades of drones, and the wind speed is strengthened. Using brushless DC motor, stable and quiet operation, low noise and strong wind, drive away the stuffiness and cool instantly. [Foldable and Portable] This baby fan has a stylish. You can easily put hand electric fan in your pocket. Whether it is at home, work or travel, you can carry this walking wind source with you.