①. Ultra-long durability and strong airflow - Adopted advanced technology, it can run for 14 hours with 2 speed levels, 21 hours with 1 speed after about 3 hours of full charging. The maximum fan speed is 3,400 rpm, which is enough for personal use to keep you cool. ②. Foldable design and small size - The foldable design is convenient to carry and store. In addition, the capsule shape makes this rechargeable fan can hide the fan blade, small and easy to put in your pocket and handbag. ③. Power bank function and quiet operation - 5V/1A USB - C output port mini fan power bank (2000mAh) for emergency, supplying power to mobile phone, MP3 or iPod, etc. Frameless design, makes 50db noise, which does not cause any discomfort when working. ④. Flashlight and wrist chain included - long press the power button to open the flashlight function when the fan is not working. The flashlight is quite bright and can be useful in dark places or during power outages. You can use the included strap to hang it on your hands or on your travel backpack. ⑤. USB powered fan and fast charging - you can use a wall charger, laptop, power bank to charge. And the portable fan only needs 2 - 3 hours to fully charge.