Check out 7777's Preon2. Titanium, and thin enough to slide into a front pocket like an EDC folder.
Low: 2.2 OTF Lumens, 23 hours
Medium: 22 OTF Lumens, 6 hours
High: 160 OTF Lumens, 0.8 hours
Strobe
SOS
Beacon (Hi)
Beacon (Lo)

The first time I lit off the High mode inside was a wake-up -- won't do that again.
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Better is the Enemy of Good Enough.
Okay, what’s your point??