Variable heat settings 230/430F For all hair types Cool tip for easier handling Locking switch Locks plates together for easier storage The Hot Tools Nano Ceramic product line features the best of the best ceramic hair waver. Designed to help protect hair from overheating, to keep hair integrity intact and help minimize hair damage. Nano-size particles of ceramic create an ultra-smooth Micro-Shine snag-free surface allowing hair to effortlessly glide across the styling surface with less pulling just styling, leaving behind smooth and shiny strands.