The fixed ceramic bristles heat up to 14 settings ranging from 175 degrees to 420 degrees Fahrenheit, it will work on all kinds of hair from thickand thin to wavy and curly. The temperature can increase in 10-degree increments so you will find the heat setting that works for you and thestyle you are wanting to achieve. The LED display on the handle indicates what heat temperature it’s at and can be adjusted simple by pushingthe button up or down to change temps. Need to travel, no problem, it has universal voltage from 110V to 240V for seamless worldwide usage.It will also auto-shut off after 30-minutes of inactivity for safety and storage. Beautiful matte black finish with an 8 FT professional swivel cord,engineered and designed in Italy, will allow easy access around the salon or home bathroom.