Multi-Functional fan blows cool wind, work as night lamp while it can be also used as an emergency power bank. 5 Fan blades provide powerful wind, take away the discomfort of muggy weather and drive away heat and circulates air in seconds. 3 levels of speed and brightness can easily meet your different needs for outdoor activities, like barbecue, fishing, camping etc.. This fan built-in 10,000mAh rechargeable battery provides with 8-27 hours of continuous use, which is inherently design for your