Foursevens Gen2 QT2A-X 2XAA 336-Lumen Quark Tactical QT2A-X/X AA Cool White LED Light, Black Finish Moonlight:0.4 lum, 15 days/Low:3.2 lum, 3 days/Med:28 lum, 20 hrs/High:138 lum, 2.5 hrs/Max:336 lum, 0.8 hrs Special Modes: Strobe: 280 lumens, 1.6 hrs/SOS: 336 lumens, 3 hrs/Beacon: .4-336 lumens pulse, max-8 hrs Included accessories: Batteries, lanyard, split ring for keychain attachment, spare o-ring, holster, hand-grip Lens Material: Impact-resistant glass, sapphire coating, antireflective coating Body Material: Type-III hard-anodized aircraft-grade aluminum