Rechargeable Hanging Neck Fans Usb Portable Small Fan Portable Electric Fanfeature: USB rechargeable: It can be powered through the USB port, and the fan is compatible with most computers, laptops, Portable chargers and other devices with USB output. The working time of 2-12 hours depends on different speeds. 3 speed grades: low, medium and high speed grades. You can adjust the proper fan speed by repeatedly pressing the power button. Hands-free design: This fan is designed as a headset, so you can put your hands anywhere. Hang it around your neck and you can carry it with you. Adjustable angle: You can also adjust the appropriate wind direction angle to meet your needs. Double wind head: The portable fan has two wind heads, which can feel a airflow. It can be worn on the neck or placed on the table. Multi-function: It is very suitable for personal cooling in hot outdoor activities, such as camping, picnic, sports meeting, travel, sports, football and baseball, Camping, hiking, fishing, golfing, etc. High-quality materials: made of safe materials, ABS and silicone,environmentally friendly.How to use: 1) Please charge it before using it for the first time. 2) Hang around your neck and hold the button for 3 seconds to turn on/off 3) Press the button repeatedly to change the wind speed, low/medium/strong.Tips: 1) It is best to tie your hair before using the mini personal fan. 2) When the fan cannot reach the third speed or cannot be turned off, p