The hair dryer brush has 3 adjustable heat settings of LOW, MIDDLE, and HIGH, it is refer to the HEAT level and not the speed of the air blowing. LOW: Low Heat & High Air Speed. MIDDLE: Warm Temp & Low Air Speed. HIGH: Hot Temp & High Air Speed. A perfect combination of a hair dryer and a styling comb, allowing you to dry your hair easily while smoothing your hair. Frizz Free Salon Plus Blow-dry in Up to Half the Time.