About this itemUSB Rechargeable & 3 Speed WindPortable fan, convenient to charge via computer, cell phone charger, power bank, laptops, etc. mini fan portable with a 4000 large-capacity battery, which increases the wind power and battery lifespan. Three levels of speed adjustment functions allow you to choose the air volume you like. The first speed can work for 19-21 hours, the second speed for 7-9 hours, and the third speed for 3-5hours.Cooling & SafePersonal fan with 48 wind outlets and 60pcs twin-turbine fan blades, multiplied wind power and can quickly feel cool in 3s. Bladeless neck fans can be used safely by children and the elderly. And you dont worry about getting your hair in. The neck fan will keep you cool always.Adjustable GooseneckThe hanging neck fan is made of high-quality soft silica gel, the Angle can be adjusted at will, it can better fit the skin, it can effectively prevent sliding, it is flexible and not easy to break. In addition, it has the function of heat insulation, which can prevent the fan from working too long to produce heat and cause discomfort to the neck.Ultra-quiet & DurableThe cooling neck fan with noise reduction of around 25db brings quiet and cool breeze. This fan has a lot of power, but it weighs only 250grams and is not difficult to carry. Even if you wear it for a day, you won't feel exhausted.Comfortable & FashionHands free portable neck fan was designed to look like a headphone, you can free your hands and have a fashion style. The wearable neck fan is lightweight and portable, you can take it anywhere. Can Be Suitable For Outdoor Sports, Indoor Exercises, Offices, Gym, Travelling, And Camping.