Radiant 28mm Hair Iron Straight Professional Specifications Instant Moisture Evaporation Prevention Moisturizing Silk Plate Reaches 220 Degrees in 30 Seconds (18000/1) [Reaches 220 degrees in 30 seconds!] Avoid the "still lukewarm!" feeling during busy mornings. Hair is surprisingly cold, and the temperature drops when you apply a hair iron, but the quick temperature recovery means you don't have to apply it to your hair repeatedly → minimizing damage. [Automatic power-off after 30 minutes] Have you ever gone out and then thought, "Did I turn off the power?"? In such cases, Radiant's power-off function is helpful. You'll hear a "rattling" sound from the main unit, which is the sensor.