1” plates. Features ATR (Automatic Temperature Reserve). Automatic shut off: iron shuts off after 40 minutes of non-use as a safety feature. ATR & auto shut off keeps it safe and conserves energy. Floating plates and rounded barrel creates vivacious curls, flips and straight hair. Far-infrared and ionic benefits. Fully digital : with FND and 18 heat settings (280°F-450°F). Lock function for easy storage. Dual voltage 100V~240V: Worldwide usage. 360° swivel cord never tangles. 2 year limited warranty