The PD20 is a compact but still ultra bright single CR123 flashlight. The light has six modes: four brightnesses and two flashing modes. If you need a light that can easily fit in your pocket but can still put out a ton of light, consider the PD20.
Cree XP-E LED (R5) with lifespan of 50,000 hours
Two modes of output, general/turbo modes, selected the six types of output by turning the bezel:
Turbo Mode: 190 lumens (1 hr) -> Strobe
General Mode: 9 lumens (35 hrs) -> 48 lumens (7 hrs) -> 96 lumens (2.8 hrs) -> SOS