Specifications include, but are not limited to: FLASHLIGHT SPECIFICATIONS High Lumens 1,000 Run Time 1.25 hours Beam Distance 447 meters Max Candela 50,000 Battery Type CR123A Lithium Battery Quantity 1 - 2 Length 5.43 inches (13.79 centimeters) Weight 6.40 ounces (181.44 grams) - 6.90 ounces (195.61 grams) Colors Black Programming: Choice of three operating modes: 1.) high/strobe; 2.) high only; 3.) low/high. High for maximum illumination: 1,000 lumens; 50,000 candela; 447m beam; runs 1.25 hours (CR123A) Low for extended run time: 60 lumens; 3,100 candela; 111m beam; runs 21 hours (CR123A) Strobe for signaling or disorienting: runs 2.5 hours (CR123A) One-handed snap-on & tighten interface keeps hands away from muzzle when attaching/detaching Integrated rail clamp attaches to MIL-STD-1913 rails and M-LOK compatible rail systems Durable, anodized aluminum construction with impact-resistant tempered glass lens IP67 waterproof to 1 meter for 30 minutes (with standard button switch) IP54 water-resistant (with remote pressure switch) 5.43” (13.8 cm); 6.4 oz. (181.4g) with CR123A batteries Must include the following – remote switch, tail switch, remote retaining clips, M-LOK® mount, mounting hardware and 2 CR123A lithium batteries - Box – must be black in color.