The SC600 is currently the biggest and brightest model in Zebralight's line. Biggest by Zebralight standards is still far smaller than most companies' lights, so you get a compact light capable of 750 lumens on max output. The SC600 has the famous Zebralight interface that gives you instant access to all three modes from off.
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.