The LED-320D is a fast-curing LED curing light which is capable of curing most composites. Features include (1) slim and ergonomically designed outlook for room saving and easy hanging on dental unit, (2) auto switch-off mechanism for energy saving and hazard prevention, (3) 5 watt LED emission delivering efficient polymerization, (4) multiple operation modes (full power, soft-up, impulse) for multiple purposes.