✨ [1200mAh USB Rechargeable Battery] Built-in 1200mAh large capacity rechargeable battery, the wearable neck fan can work steadily for 3-5 hours, which depends on wind speed you choose and the scenario you use. It can be charge through computers, adapters, power bank, and so on through the USB charging cable, very easy to use. ✨ [3 Adjustable Wind Speeds] The personal neck fan has 3 adjustable wind speeds: low/medium/high speeds, you can adjust the fan speed to meet your needs. This portable neck fan has been improved, which is more convenient to operate. Very suitable for personal cooling, indoor cooking, reading, sports, working, camping, traveling, hiking, fishing and other outdoor activities. ✨ [Portable & Foldable] This neck fan is designed as headphones to free your hands, making it very easy to carry around. It is also compact and can be carried around in a small bag. You can use it at home, walking, traveling, cooking and camping. In hot summer, neck fan will be your best companion. ✨ [Safe & Comfortable Material] The personal neck fan is made of high quality silicone, which is skin-friendly, comfortable and non-slip. Ergonomic design can be adjusted to any angle and fixed for use, no burden on the neck, so hanging the fan for long time won’t feel uncomfortable.