General description Utilizing a cutting-edge semiconductor cooling plate paired with aviation aluminum, this neck fan reduces the surrounding temperature by up to 15℃. Experience instant relief during high heat conditions, making it a perfect accessory for outdoor and travel use. Technical specifications Battery capacity: 4400mAh Cooling duration: 1.5-8 hours depending on the speed setting Noise level: 35 decibels Dimensions: Measurement allowed error is +/- 1-3cm Compatibility and accessories Includes: 1 * Hanging neck fan 1 * USB cable Installation Easy to wear and operate; simply hang around the neck. Usage Adjustable speed settings: low, medium, high LCD display shows battery life and cooling mode Designed for hands-free operation, perfect for various activities. Other information Color: White Material: ABS Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing.