Foursevens Gen2 MM-X 2XCR123A 450-900 Burst Lumen Maelstrom X7/MM-X Cool White LED Light, Black Finish Brightness Levels: Moonlight: 0.4 lumens, 6 days/Low: 36 lumens, 21 hrs/Medium: 324 lumens, 2.8 hrs/High: 576 lumens, 1.3 hrs Special Modes: Strobe: 10hz, 576 lumens, 2.5 hrs/SOS: 4.5 hrs/Beacon: 12 hrs 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