Quick Charge: With a 2000mAh high battery capacity, these personal mini fans Flexible & Adjustable: The flexible strap allows you to adjust these portable USB rechargeable fans for adults & kids. Simply place the fan around your neck and adjust it to comfort. Function: This Mini Portable Neck Fan is available with 01 / 02 / 03 speed levels to meet your individual needs when you press the button. Intimate Design - Hands-Free: The hands-free design of the portable neck fan can free your hands.You can use this portable fan keep cool , , while hiking, camping or fishing. It's like your own personal wearable neck air conditioner. Low Noise Design & Fashion: The hanging neck fan's motor has been modified so that noises of 20-30 dB can be generated while running. It doesn't affect sleep or mood. Simple appearance and color matching makes it look fashionable.