NIB! Pro Royale Infinite Curling Iron in Classic Zebra 19 mm! European Professional Quality! 110v - 240v EU Plug. It features a swivel cord allowing you to move freely and prevent the cord tangling and becoming damaged. Tourmaline Technology, Tourmalines are a natural source of negative ions and far infrared rays. When tourmaline is crushed and combined with ceramic plates, the heating of the iron causes negative ions to be emitted, resulting in superior styling results. Far Infrared Technology creates electromagnetic waves of energy that penetrate the hair shaft drying the hair from the inside out. This results in increased moisture in the hair shaft and less damage to the hair. Nano Silver Technology. Nano-Silver particles are embedded in the flat iron plates to inhibit bacterial growth. This feature results in cleaner and healthier hair. Negative Ion Technology emits atoms that can stop the growth of bacteria resulting in healthier hair and scalp. Negative ion energy allows smaller water molecules to penetrate into the hair shaft and close the hair cuticle, which is very good for the health and appearance of the hair.