FOURSEVENS Maelstrom MMU-X/ Black Finish / Cool White LED; 1X26650; 20% Brighter Than 640 Lumens BRIGHTNESS LEVELS	Low: 100 lumens, 15 hrs / High: 640 lumens, 1.8 hrs BODY MATERIAL: Type-III hard-anodized aircraft-grade aluminum LENS MATERIAL:Optical-grade glass lens, sapphire coating, antireflective coating DIMENSIONS: Length: 5.6 inches/Body diameter: 1.3 inches/Head diameter: 1.8 inches/Weight (without batteries): 5.6 oz LED EMITTER: CREE XM-L2