2021 Upgraded Battery Life: Most of the hanging neck fans on the market are 1800mAh, while our portable fans use a usb rechargeable 2000mAh battery. The small fan can compatible with power bank, most computers, laptops, portable chargers and other devices with USB output. .Hands-free Portable Fans: Our neck portable fan can be hung around the neck and release your hands anywhere. The design of the 360 rotation mini fan head can provide more powerful airflow. This personal fan can also be used as a desktop fan to enhance indoor air circulation. Suitable for outdoor sports, fishing, golf, travel, camping, office, indoor, hiking, cycling, etc. .3 Adjustable Speed Leve: This rechargerable fan has a low or medium or high speed mode so that you can choose the wind to meet your needs.. Let you enjoy the cool wind in the hot summer months. .Double Fan Head and Seven Blades: Our USB fan is made of copper brushless motor, this personal fan produce stronger, smoother and quieter wind. Low noise of portable mini fan won't disturb you. .Lightweight and After-sale Service: This cool fan is very light and won't make your neck feel sore. If you have any problems, please feel free to . We will respond you and solve the problem for you . Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.