Dear, this hot air comb is a two-in-one function. It can both dry the hair and shape the hair.Low file: small heat + strong wind. There is wind, so the sound is loud.Middle file: small heat + small wind, only hot air. There is no wind, so the sound is small. No wind is to shape the hairHigh file: big heat + strong wind. There is wind, so the sound is loud. Product Description One-Step Hair Dryer and Volumizer Styler Comb Hot Air Paddle Styling Brush Negative Ion Generator Hair Straightener Curler * One Step Hair Dryer Volumizer. Use it as a hair styler, volumize your locks, make your hair curly or wavy and straighten it of course. Perfect for dry as well as wet hair * Ion Technology, Negative ions saturate the airflow. This helps condition, smooth and make hair shinier, while reducing frizz and static. * 1100 Watt power provides just the right heat. Unlike conventional hair dryers, this volumizer can be placed closer to the scalp for lift. 3 Heat Setting for Styling Flexibility. Great for all hair type * Oval Brush Design,Unique shape gently curved sides for smoothing and round edges for smooth volume and curled ends. Le Time, Le Damage * Mixed Bristles, Brush is designed with Nylon Pin & Tufted Bristles for easy detangle & better grip of your hair Product Type: Hair Dryer Volumizer Voltage: 110V-240V, 50-60Hz Heater: instant heat up and get you ready in 30 second Display: LED indication light, gives you precise control over selected heat Function: Condition, smooth and make hair shinier, while reducing frizz and static. Temperature: Profeional styling temperature, suitable for all hair type Cord: 2.5Meters, 360 degree swivel power cord for free and convenient use Strong wind: 3-speed wind-driven tourmaline ceramic heating.Plug type: EU plug( adapter) US plug( adapter) UK plug( adapter) AU plug(add adapter)Package included:1* Hair curler1* Gloves1* Salon Comb2* hair clip