3 features in one device Brush with far infrared heat and green ions to lock in moisture, reduce heat damage and blow dry hair. Ceramic base and heated bristles emit maximum heat to make hair smooth and straight. The advantage of operating the device with or without sound to do the work of drying and styling hair at the same time. Product model: ok-724 Voltage: 220 - 240 volts Frequency: 50/60 Hz Rated power or power: 1200 watts Positive temperature rating of heating temperature: 200°C Technology used: ionic technology and far infrared