Portable Neck Fan refers to a hand free headphone design wearable portable neckband mini fan with USB rechargeable for travelling outdoors office tips before use. These neckband fans are very flexible and adjust the direction 360 degrees which allows you to find the most appropriate wind direction. It's perfect for both indoor and outdoor activities. It comes with a USB rechargeable that can charge the fan via a USB cable. Portable Neck fan is a great way to cool off and it's a very convenient option that can be used with free hands. It makes it easy for your needs.