Dyson Airstrait StraightenerCompatible with 220 240 Voltage. Wet to dry straightening with air. No hot plates. No heat damage. Airflow is projected downwards at a 45 angle to create the tension needed to align hair for a smooth end style with less damage and breakage. Glass bead thermistors, located in the machine arms, regulate airflow temperature up to 30 times per second to prevent heat damage and protect hairs natural shine. Dyson Hyperdymium motor has a 13 blade impeller