FOURSEVENS Maelstrom G5 /MMS Black Finish / Cool White LED G2; 2xCR123A; 420 Lumens Brightness Levels: Moonlight: 0.2 lumens, 7.5 days/Low: 28 lumens, 22 hrs/Medium: 200 lumens, 3.1 hrs/High: 350 lumens, 1.3 hrs Special Modes: Strobe: 10 hz, 350 lumens, 2.7 hrs/SOS: 8.5 hrs/Beacon: 30 days Included accessories: Batteries, lanyard, spare o-ring, holster, non-crenated spare bezel, flat grip-ring spacer Lens Material: Optical-grade glass lens, sapphire coating, antireflective coating Body Material: Type-III hard-anodized aircraft-grade aluminum