4Sevens/Foursevens Quark Tactical AA/ QTA Black Finish / Cool White LED; 1XAA; 109 Lumens Moonlight:0.2 lum, 10 days, 1ma/Low:4 lum, 2 days, 10ma/Med:22 lum, 6 hrs, 50ma/High:85 lum, 1.5 hrs, 250ma/Max:109 lum, 1.2 hrs, 350ma Special Modes: Strobe: 109 lumens, 2.5 hrs/SOS/Beacon: 0-109 lumens pulse, 18 hrs Included accessories: Battery, lanyard, split ring for keychain attachment, spare o-ring, holster, finger-grip Lens Material: Impact-resistant glass, sapphire coating, antireflective coating Body Material: Type-III hard-anodized aircraft-grade aluminum