Demi™ Plus, powered by Demetron™ Technology, is a next generation, LED dental curing light. Consistent output of Periodic Level Shifting (PLS) delivers a true 5-second cure for composite shades A3 and lighter Whisper-quiet fan and unique thermal control system keeps the unit cool for uninterrupted operation and extends the overall life of the unit Lithium-ion battery technology can yield 300 10-second cures with a single charge Lightweight, ergonomic design reduces hand and arm stress