Low Noise Bladeless Fan: : The mini fan adopts bladeless design, which is quiet and the wind is stronger. When you use a small fan, you don't have to worry about your hair getting caught in the blades. The low noise portable mini fan will not disturb you. It is perfect for both indoor and outdoor activities. NEW DESIGN: : Our improved neck fan is an ergonomic fan that emphasizes comfort and flexibility. Lightweight and portable, this fan can be worn comfortably for long periods of time without discomfort or strain. With the neckband design, you can free your hands, enjoy the cool wind and do whatever you want. USB Charging: : Built-in rechargeable lithium battery, you can charge the fan via cable USB. And the USB cable that comes with the fan can be compatible with any USB port, such as computers, laptops, power banks and ordinary outlets. Due to the different speeds, the working time is 2.5-6 hours. Double heads and 360 rotation: : portable fans on two heads and 3 speed levels, including low/ medium/high speed. And this portable fan also rotates 360, so you can control the direction of its airflow to maximize comfort. Wide Application: This portable fan is ideal for cooling employees, offices , outdoor activities, such as camping, traveling, hiking, mountaineering and sports, etc.