Color:Black Welcome to the 2 in 1 FOXWILL Anti Scald Anti Static Ceramic Heating Hair Straightener 2 in 1 Function: PTC Heating+ Ionic Hair straightener brush About PTC Heating Positive Temperature Coefficient(PTC) heating elements are small ceramic stones with self-limiting temperature characteristics.PTC stones have fast heating response times and plateau once the presefined reference temperatures is reached.It gives even heat distribution and quick temperature recovery time. About Ionic Technology The built-in ionic generator emits negative ions-negative charged atoms and molecules that can interact with the molecular particles in your hair.They seal the hair cuticle reducing frizziness, splits ends,knotting and increasing hair manageability,leaving hair silky and lustrous! Temperature Setting The default operating temperature is 190?,you can short press the temperature button to adjust the operation temperature.Once the temperature is set,then temperature LED setting light will start flashing.It will stop flashing and stay on when the set temperature is reached. Working Temperature Advices Level1,around 150?,suitable for first time user or user with thin and fine hair,or bleaches hair. Level2,around 170?,suitable for dyed or dark color hair. Level3&Level4,around 190? to 210?,suitable for normal or slightly curled hair. Level5:around 230?,suitable for thick and very curly hair,or difficult to style hair. Automatic Security Turing off after a usage of 60 minutes. To switch temperature display between ? and ?,please hold down ionic and power button at the same time for three seconds. US safety Plug,Short Circuit Protection, Leakage Protection. Dual voltage operation support:100V~240V. Travel International use:need an extra international power plug adapter.