Delta

A short 18350 EDC that introduced Prometheus' user-swappable optics and graphite thermal pads (now standard across the line). Comparable output to the Alpha in a smaller package, trading runtime for size. Buyer's-choice emitter, UCL glass, titanium clip and a Tellurium-copper pill. Requires IMR 18350 cells.

Output: 850–1100 lm max · 0.5 lm min · 0.5 h–90 h runtime · IPX8 (10 m).

Materials & finishes: 6061-T6 aluminum (Electroless Nickel), Titanium, solid Copper, solid Brass, Blasted Hex Electroless Nickel, Black Marble, plus Special/Tritium editions. An 18650 extension body is available. Roughly $335–$900 (Custom $375).