Specification: Product Name: Bladeless Hanging Neck Fan Product Weight: 258 grams Battery Capacity: 3000 mAh Working Voltage Range: 5V Power: 5W Operating Time: 4-16 hours Interface Type: USB-C Wind Speed: 5 settings Short press to turn on speed 1. Short press again for speed 2. Short press for speed 3. Short press for speed 4. Short press for speed 5. Short press for speed 5 to produce wind. Feature: 1. This bladeless portable neck fan can last up to 8-12 hours. 5 wind speed levels are adjustable. 2. Uses a 360-degree global air supply mode. Three-dimensional air output. The air vents are high and low, doubling the cooling effect. It solves the problem of lack of airflow in the neck and provides all the cooling you need. 3. Made of skin-friendly silicone, it will not cause discomfort when in direct contact with the skin. The neck-hanging design is very comfortable, whether you are sitting or walking. It will not add any weight, allowing you to travel light. 4. The noise level is less than 36 decibels, making it quiet. An excellent aid for staying cool during work and study. The sound will not disturb your thinking but will also refresh your mind. It is very refreshing without being stuffy. 5. The design is exquisite and will not feel bulky when worn around the neck. The bladeless design means women with long hair don't have to worry about their hair getting caught. It's simply a cool summer accessory.