[This electric neck fan has a smart LED digital screen that displays the fan speed in real time, making it easy to track the wind status. In addition, it also has 5 adjustable wind speeds, so you can adjust the fan wind speed according to your needs. 3000mah High Capacity USB Rechargeable Fan】Built in a 3000mah USB rechargeable lithium-ion battery, the portable neck fan takes about 4 hours to fully charge. The working time is about 3-6 hours, depending on the air speed you choose. Hands-Free Portable Fan】The upgraded fan is more portable and can be carried in a small bag. It is designed like a headset so that you can hang the fan around your neck to free your hands. The mini hanging neck fan is your best companion in hot summer days. You can free your hands when you are exercising, cooking, cleaning or traveling. 【Powerful and Quiet Neck Fan】Our hanging neck fan features excellent air amplification technology and dual-channel air intake design, which greatly reduces the fan noise to