Mini Portable, Multi-functionalThis mini portable fan weighs only 130 grams. Meanwhile, it can be used as a neck fan, handheld mini fan, mini desktop fan, or cell phone stand. When folded, it fits effortlessly into a pocket, handbag or backpack. It can also be used as a temporary power bank to charge your cell phone when nessary.4 Levels Adjustment, Long Working TimeThis handheld fan has 4-levels wind power adjustment. The 4th speed is a cyclic wind mode, which simulates natural wind, circulating from the 1st speed to the 3rd speed. It is equipped with a 3000mAh battery, which provides up to 10 hours of cooling time on a single full charge. The wind power can be adjusted via pressing the power button. And you can turn off the fan by long pressing the power button for 2S. It only require 3 hours of charging time to fully charge.Digital Battery IndicatorThis mini portable neck fan is really a summer essential for women and it can protect your hard-earned makeup from smudging on hot summer days. It has a digital LCD display, you can know the remaining battery level at any time. If it shows '00', the fan will not work, please charge it to 100% before using it.Low Noise, More ComfotableRuebanLife personal travel fan comes with multi-dimensional noise reduction design and it is equipped with a brushless motor, which achieves super quiet sound of less than 30db decibels even at 3 speeds of up to 4350rpm.