The Zebralight SC80 is well known for its ability to use either a CR123 battery or an alkaline AA battery without having to use an external body piece.This eliminates the need to carry an extender and also allows the light to produce the same amount of lumens with either battery type.
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.