About this item Super Long Endurance & Strong Airflow - Adopted the advanced technology, it lasts 14 hours with 2 speed levels, 21 hours with 1 speed after about 3 hours fully charged. The maximum rotating speed of the fan is 3400RPM, which is enough for personal use to keep you cool. Foldable Design & Mini Size -- The foldable design makes it easy to carry and store. Besides, with the capsule shape, this rechargeable fan can hide the fan blade, small and easy to slip into your pocket and handbag. Power Bank Function & Quiet Operation - The 5V/1A USB-C output port makes the mini fan a power bank (2000mAh) in emergency, powering cellphone, MP3 or iPod, etc. Without frame design, makes noise at 50db which does not cause any discomfort during working. Flashlight and Wrist Chain Included - Long press the power button to open the flashlight function when the fan is not rotating. The flashlight is bright enough and can be useful in dark areas or when there is a power outage. And with the