Portable neck fan built-in 2000 mAh large capacity rechargeable batteries and adopts the latest low-power design, 2 hours of charging the fan to the full will grant you 3-10 hours of coolness depending on different speeds. With 4-speed levels low/middle/strong/natural Wind, you can adjust the appropriate fan speed by pressing the power button. There are 48 wrap-around air outlets over the portable neck fan can give you 360 degree wind around your neck and face. With the 60 twin turbines blades the wind is increased by 50%, and it can cool quickly in 3 seconds. Hand free neck fan was designed as a headphone to free your hands anywhere. Bladeless design, you don't have to worry about your hair getting caught on the fan blades. This personal fan uses a brushless motor to make the noise less than 40 db. With the soft silicone on the neck part of the wearable fan, you can always adjust the angle of the airflow at will. This rechargeable neck fan is very suitable for indoor/outdoor personal cooling, such as cooking, camping, traveling, hiking, climbing, fishing and etc.