----Improved circuitry maintains a more constant styling temperature. The iron heats up to its maximum temperature every millisecond ensuring optimum heat on the hair from root to tip. ---- Sleep mode function automatically switches iron off if it is not used for 30 minutes. ----Universal voltage feature operates from 110V to 230V by sensing the incoming voltage, making it great for travelers. ----Includes an instructional DVD. High performance properties: - Designed to create curls, twists,flicks, and waves, as well as straighten the hair.