FOURSEVENS Mini CR2/ MLR2 Black Finish / Cool White LED G2; 1XCR2; 216 Lumens Brightness Levels: Low: 3 lumens, 1.2 days/Medium: 40 lumens, 4.4 hrs/High: 180 lumens, 40 mins Special Modes: Strobe: 1.4 hrs/SOS: 4.3 hrs/Beacon Hi: 7.2 hrs/Beacon Lo: 36 hrs Included accessories: Battery, lanyard, split ring for keychain attachment, spare o-ring Lens Material: Optical-grade glass lens with antireflective coating on both sides Body Material: Type-III hard-anodized aircraft-grade aluminum