The SabreLite LED with Recoil LED Technology works like a lighthouse - it focuses the light by firing backwayds. 100 percent of the light is caputer and reflected forward. The result is a bright white collimated beam that cuts through the thickest smoke, fog, and dust. The SabreLite LED combineds the brightness of an incandescent with the ling life and durability of an LED. The Pelican flashlight has an o-ring sealed with a twist on shroud that makes it one of the first submersible lights with Recoil LED technology.