Andis 67410 1" Curved Edge Professional Heat Flat Iron - Maximum heat up to 450 F for long-lasting styles; Curved plates straighten without leaving dents or lines in the hair; Perfect for creating smooth curls waves flips and volume; Tourmaline crystals crushed from precious gemstones emits negative ions that quickly seal the cuticle layer and eliminate frizz for smoother silkier hair; Nano-ceramic creates an ultra-smooth finish and even-heat which preserves natural oils and seal the hair cuticle for improved moisture retention- the result is increased luster and shine; 20 variable heat settings for all hair types; Worldwide dual voltage; Fast 30 second heat up; Tangle-free swivel cord; Closing lock; Auto shut off.