The Demi Plus builds upon our legacy and continues to offer the same compelling features that have made the Demi curing light such a commercial success, including: Lightweight, ergonomic design Interchangeable Light Guides Improved Cooling System Multiple Curing Options Periodic Level Shifting Features You Can Depend On Advanced Battery Design. The positive contact charger on this cordless curing light guarantees a snug fit between the contacts on the hand piece and the charger base allowing you to get the most out of every charge. Enhanced Body Design. This curing light’s exterior is made from Valox resin, a high-performance plastic that will protect and extend the life of your unit. In addition, the upgraded closed housing allows for easier cleaning and disinfection. Extended Light Guide. The Extended Turbo Light Guide enables better application with improved access (+28% additional reach) for posterior procedures. Longer Warranty. Our three-year warranty ensures that you get the most value out of your premium LED curing light investment.