[Cerf Fan Design]: This unique portable USB rechargeable battery neck fan has a hands-free design. The ultra long battery neck fan hangs around the neck and is a great helper for solving rib face and neck problems USB Charging Design - The neck fan has a built-in 1200 mAh ultra long charging battery, which can be quickly charged through USB. The neck fan has three modes: low, medium, and high. Press the power button for easy adjustment,The fan blades adopt a seven blade design, with a working time of 6-20 hours (depending on wind speed) [Foldable, 360 rotation] - The portable fan has two spotlights, allowing you to feel stronger airflow. It can be rotated 360 degrees to adjust the design, allowing you to adjust to any different direction [Safe Material, Lightweight] - The portable personal neck fan casing is made of ABS material and weighs only 6.3 ounces. It is both safe and environmentally friendly. Built in pure copper blue The motor ensures the power of the neck fan, allowing you to enjoy the quiet wind This is a trustworthy brand, and our store team will help you achieve a pleasant purchasing experience The correct use of the neck fan: In order to extend the battery life and prevent battery loss during transportation and storage, we recommend that you receive the neck fan. Please charge for at least 30 minutes before use Suitable for travel, office, home, outdoor sports fans Wearable tie cooler neck fan * Sports fan rotates 360 degrees freely *Single button with 3 adjustable speed fans