Surefire has introduced the auto adjusting IntelliBeam Technology into the M600IB Scout. The M600IB Scout with IntelliBeam Technology was introduced at SHOT show and is now available to order. The lightbeam can adjust from 100 to 600 lumens, and depends on the reflection off of the target. The runtime for the light beam is 5 hours, 1/2 foot long, and weighs 6.2 ounces. New technology with great features.