the lens is the Achiles Heel of the Zebralight design, it is only 1mm thick, and surrounded by a very thin bezel. As you can see, the lens is what breaks on a Zebra:
View attachment 49519
image from
the Tim McMahon review
thank you.. I must have done something wrong when I tried to program my first Zebra.. it would scroll low high medium.. I got so frustrated with the Zebra UI that I resold the light immediately, and went back to my Anduril lights, and HDS and Jetbeam Rotaries, all of which allow me access to scroll through the full range of outputs, not just 3, as in a Zebra.
The Zebra UI was just not my cup of tea. I had a lot of trouble with the timing of the hold command and the double clics. I often ended up in Strobe unintentionally, and had trouble accessing the low mode because I would hold the button to long and end up scrolling to medium or high.
I respect that a lot of people Love their Zebras, different strokes.. carry on ;-)