Say goodbye to hot summer -- Neck fan with 3 adjustable wind speed, large air outlet, 360°surrounding cooling wind for the entire face around, adopt newest turbine blades that can cool quickly in 3 seconds, a good cool friend for indoor and outdoor use such as when cooking, working, traveling, Running [Low noise more focused ] -- upgraded brushing motor, with noise reduction function, the wind sound is much more quieter, tested to a maximum wind decibel level of less than 25db, won't be disturbed when working or studying [Long battery working life] -- large capacity 4000mhA battery, which can working 4-16 hours, (depending on different speeds), great for outdoor use; USB powered rechargeable, can be charged by computer, phone charger, mobile power, etc [Hands free headphone style design] -- The fashion style makes you look cool, adjustable size let it suit for most of people like men, women, children; skin-friendly ABS material, flexible and not easy to broken