CROC HYBRID CURLING IRON HYBRID FUNCTION (Spring Iron + Marcel Iron): Spring-style clamp and Marcel like rotating handle makes it easy for wrapping the hair around the barrel evenly and for quick and easy style. ADVANCED CERANYX (CERAMIC + ONYX): With heat, the advanced ceranyx (ceramic + onyx) barrel is constantly radiating far-infrared rays and negative ions into the hair. DOUBLE HEATING SYSTEM heats up quickly; Maximum temperature 430°F. LED DIGITAL DISPLAY: 3 heat settings COOL TIP TEMPERATURE INDICATOR: When the temperature is up to workable grade, the circle will change color to white. AUTO SHUT OFF setting is activated when no movement is detected in 50 minutes. DUAL VOLTAGE 100V~240V: worldwide usage. 360° SWIVEL CORD never tangles. 3/4inch, 1inch, and 1 1/4 inch are available.