ProTac 90 - Clam 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: 300 lumens; 147m beam; runs 1.75 hours. Low: 40 lumens; 53m beam; runs 14 hours. Strobe: runs 2.5 hours. AA alkaline/lithium battery output:. High: 125 lumens; 93m beam; runs 2.75 hours (alkaline); runs 5.5 hours (lithium). Low: 40 lumens; 53m beam; runs 8.25 hours (alkaline); runs 15 hours (lithium). 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. Includes nylon holster, one CR123A lithium battery and one “AA” alkaline battery (also accepts one “AA” lithium battery). Durable, anodized aluminum construction with impact- glass lens. Rubber push-button tail switch. Removable pocket clip. 3.78” (9.6 cm); 2.8 oz. (79g) with CR123A battery; 3.1 oz. (88g) AA alkaline; 2.7 oz. (77g) AA lithium. Limited lifetime warranty. RoHS compliant 88087