SureFire FURY IntelliBeam (Dual Fuel)(High Lumen)Be The Brightest In The Class. The Fury IntelliBeam is in a class by itself, a versatile pocket searchlight that can adapt to meet your lighting needs on the fly. It takes the 1,500 lumen capability of the Fury DFT and adds SureFires proprietary IntelliBeam circuitry. IntelliBeam automatically and seamlessly adjusts output to the optimal setting between 15 and 1,500 lumens based on your environment. Or you can simply double click the tailcap to