Negative ion and constant temperature function Negative ion technology and constant temperature function ensure a healthier hair care and drying experience. Negative ions hydrate hair, lock in moisture, prevent heat damage, smooth hair, eliminate split ends, reduce protein damage, maintain hair's natural moisture and dry quickly. High performance The 2000W professional hair dryer adopts airflow collection technology to increase the wind speed of the hair dryer and uses U-shaped heating wire to distribute heat evenly. With strong winds, you can dry your hair quickly and style it faster and easier for a stunning look. 3 Detachable Air Nozzles]: Smooth Nozzle, Quick Dry Hair, Straight Hair and comfortable styling; styling for dry and straight hair, easy control direction, concentrated wind, comfortable styling; diffuser can make curls more visible and smooth, diffuser hair dryer for private styling experience. 3 hot and cold modesFeatures: Variable speed temperature control, constant temperature protection and balanced heat to give your hair the best control and versatility. Suitable for different hairstyles and drying times as well as heating and cooling for different hair types. Overheat protection device Effectively prevent thermal damage; AC motor, long life, low consumption, low failure rate; the hair dryer is small and easy to carry, the length is only for iphone 7, and the cable length is 2.5m, which can provide more freedom of movement.