Please note that this is the flood version of the SC51 and the specs below are for the regular SC51. The SC51F has a frosted lens, which does a great job of smoothing out the beam and making a very nice flood light, but it greatly reduces throw.
This light has 3 main levels (High, Medium, and Low). Each main level can be configured to one of its two sub-levels. The second sub-level of the High can be further configured to different brightness levels or strobes.