Multi-Fuel: Uses one (1) AA alkaline or one (1) CR123A lithium battery (both included); also accepts AA lithium CR123A Lithium: High: 350 lumens; 219m beam; runs 1.75 hours; 12,000 candela Low: 40 lumens; 19m beam; runs 14.5 hours; 1,380 candela AA Alkaline / AA Lithium: High: 150 lumens; 141m beam; runs 1.5 hours (alkaline); runs 4.5 hours (lithium); 4,950 candela Low: 40 lumens; 19m beam; runs 8 hours (alkaline); runs 14 hours (lithium); 1,380 candela Strobe for signaling or disorienting TEN-TAP® programming: Choice of three user-selectable programs: 1) high/strobe 2) high only 3) low/high Remote pressure switch features momentary and “constant on” operation Integrated rail clamp attaches to MIL-STD-1913 rails; easy to attach, secure mounting Includes remote pressure switch, push-button tail cap switch, remote retaining clips, double-sided tape, zip ties, and M-LOK® mount Durable, anodized aluminum construction with impact-resistant tempered glass lens IPX7-rated with standard switch installed; waterproof to 1 meter for 30 minutes IPX4-rated with remote pressure switch installed Limited lifetime warranty