The Zebralight SC31 and SC31w are the new versions of the Zebralight CR123 flashlights. They retain the awesome ZL interface that gives you instant access to all three modes from off. The big change is the switch from a CREE XP-E LED to an XP-G LED for increased output.
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.