And there are 5-speed settings of our portable fan to meet your different needs,not making you feeling hot in summer. The portable neck fan adopts brushless motor design and the use of high quality noise cancelling materials all-around,which actively noise reduce by 200% and the noise down to 20 db(Not interfering your attention while studying or working). And our personal fan with bladeless design also uses imitation aviation turbochargers with 60 pieces upgraded turbo blades to double the airflow,enhance and soften the wind power,making cooling fast. Fans built-in 2000mAh high-quality large capacity battery. The smart display screen of our battery operated fan shows the current battery capacity and wind speed gear, making it easy to charge in time and adjust to the appropriate wind speed gear as needed. The wearable neck fan is designed in the shape of headphone suitable for hanging around the neck, no need to hold to free your hands. Don't worry about hair getting caught in our small portable fan! The use of external centrifugal bladeless turbo blades of necklace fan prevents the hair from being drawn into the fan blades even if they are close to the fan which will result in hair damage or scalp pain due to pulling. The width of our personal fans for your neck can be adjusted freely within the range of 10-30cm,suitable for different neck sizes including women,men,and even kids. Our bladeless fan is lightweight be convenient to carry for outdoor and indoor,used for many activities and places such as travel,camping,running,cooking,beach,office,gym and so on.