The Porcelain Ceramic technology in our straightening irons distributes even heat across the plates and generates far-infrared heat a more efficient heating method which is gentler to hair. Rheostatic dials let you select desired temperatures up to 450°F and the ceramic heater provides instant heat-up and recovery while the longer plates allow you to work faster with wider sections. The result is smooth sleek Ceramic 1 1/2 Straightening Iron by.BabylissPRO BP9559UC Porcelain Ceramic plate technology. Rheostat temperature dial- up to 450F Ceramic heater instant heat and recovery. Longer plates straighten more hair faster