The Coltolux LED combines a slim curing probe with high output in a cordless lightweight pen-style design. The Coltolux LED's heat sink technology reduces the amount of heat emission and eliminates the need for a fan. The slim curing probe is ideal for hard to reach posterior areas. Its slim shape enhances visibility of the restorative material during the light curing process. It has an audible signal every ten seconds and automatic power saving sleep mode after 20 seconds of operation with hundreds of cures with a fully charged battery.