TEN-TAP® Programming allows for selection of three different operating programs: 1) high/strobe/low 2) high only 3) low/high Accepts a single lithium or alkaline battery CR123A lithium battery output: High for bright light:?350 lumens; 160m beam; runs 1.5 hours; 6,400 candela Low for longer run time: 40 lumens; 53m beam; runs 14 hours; 720 candela Strobe for signaling or disorienting: runs 3 hours AA?alkaline/lithium battery output: High: 150 lumens; 105m beam; runs 1 hour 20 minutes (alkaline); runs 4.25 hours (lithium); 2,750 candela Low: 40 lumens; 53m beam; runs 7.5 hours (alkaline); runs 14 hours (lithium); 720 candela Strobe for signaling or disorienting: runs 3.5 hours (alkaline); runs 8 hours (lithium) IPX7 waterproof to 1 meter for 30 minutes; 2 meter impact resistance tested Solid State power regulation provides maximum light output throughout battery life Includes nylon holster, one CR123A lithium battery and one “AA” alkaline battery (also accepts one “AA” lithium battery) Durable, anodized aluminum construction with impact-resistant tempered glass lens Rubber push-button tail switch Unbreakable pocket clip Anti-roll head 4.25” (10.8 cm); 2.5 oz (71g) with CR123 battery; 2.8 oz (79g) with AA alkaline battery; 2.4 oz (68g) with AA lithium battery Limited lifetime warranty RoHS compliant