Introducing ghd's professional 3X faster* HD motion-responsive™ styler, ghd chronos; for one stroke high-definition results that last 24 hours**. ghd's most advanced styler, suitable for all hair types. 3X faster* HD Motion-Responsive Styler: 2x more responsive✝✝✝ for ultra-fast personalised styling, continuously adapts to your styling movements, adjusting the power for unparalleled heat monitoring accuracy at the optimum styling temperature of 185°C, indicated by the sensor light.