JISULIFE Portable Neck Fan 3-Speed Hand Free Mini Fan -FA11, 4000mAh

Features:
Hands-Free and Wearable - The newest mini fan can be hanged neck, keep your hands free.
360 Rotatable Double Fan - The soft and flexible material makes the personal cooling fan can 360rotation, you can adjust the fan to the most comfortable angle.
Long Working Hours and USB Charging - MIni neckband double fan has built-in 4000mAh/9600mAh lithium battery(optional), which can be chargedby the USB cable.
3 Adjustable Speeds - This Wearable Neckband Fan is available with Low/Medium/High speed levels
Low Noise One Button Operation - This personal neck fan with one button operation design, is not only powerful but also quiet, the high speed working sound is lower than 45db.
LED Light - With LED mode, suitable for sporting/ reading at night.
3.How to use it?
Wind Speed Adjustable
Short press 1time (turn on / 1 gears Speeds)
Short press 2time (2 gears Speeds)
Short press 3 times (3 gears Speeds)
Short press 4 times (turn off)
Light Adjustable
Long press (turn on)
Long press second time (turn off)
4.