Of course this old dinosaur has had an 800 Lumen LED upgrade so now it also can be used to soften asphalt and start campfires.
My old 4-D Fenix TK-70 puts out up to 2200 lumens and has various settings including a low of 20 lumens that will run for 168 hours.
Field Testing Fenix TK70 LED Torch
https://www.youtube.com/watch?v=PkF5wxrddGQ