Three speed: One key to control three kinds of wind speed, you can adjust the wind speed according to your needs Neckband: You can hang baby fan on your neck, release your hands, you can rotate 270 to adjust the wind direction from face to neck Foldable: Hanging Neck Fans Foldable size is 8 x 8 x 3.5cm, you can take it with you when shopping, camping or climbing Power Bank: The USB port in the handheld Mini fan can charge the device anytime and anywhere, improve the sense of security when you go out Low Noise: USB Desktop Fan is ultra-Quiet, can bring you cool wind within 2 meters [Sale Guarantee] - If you have any questions about the product, please contact us, our professional customer service team will solve the problem for you as soon as possible.