Features:Three wind speed adjustment: Three wind speeds are available for adjustment, so you can switch between soft and strong at will, bringing nature home.Silent motor: The fan makes low noise while providing great wind speed, which does not annoy you and your family and affect study, work, sleep, etc.Semiconductor refrigeration: The neckband is made of semiconductor material, which is cool to wear and gives you a refreshing feeling from top to bottom.Long-lasting battery life: The built-in 2000mAh battery can be fully charged quickly, and it can support 6-8 hours of cool wind supply when fully charged.Comfortable to wear: Soft neckband design for easy carring, plus compact size and light weight, make your neck not tired after wearing it for a long time.Specification:Material: PlasticWeight: 260gColor: White/BlueSize: As picture showsPower Supply: USBNoise: 51-70dbRated Voltage: 5VRated Power: 5WRated Frequency: 70HZWind Speed: 3 speedsBattery Capacity: 2000mAhBattery Life: 6-8 hoursPackage Includes:1* Neck Fan