The powerful Streamlight Stylus Pro Flashlight is no larger than a pen, yet produces 48 lumens of white light from its shock-proof LED bulb. Additional features include an aircraft aluminum body, unbreakable polycarbonate lens, O-ring seal, tailcap activation switch, pocket clip and belt holster. Requires 2 AAA batteries (included) for a 6-1/4 hour runtime. Lifetime factory warranty. Technical Information-Corrosion and water resistant construction-Uses two AAA alkaline batteries, included-Weighs 1.64 oz with batteries-5.3" x0.6"Specifications and Features: Durable, anodized machined aircraft aluminum construction White LED produces 100 lumens; 950 candela; 62m beam; runs 8 hours IPX4 water resistant; 2m impact resistance tested About the size of a marker, it fits conveniently in your pocket 5.3 (134 mm); 1.64 oz. (46.9 g) Removable pocket clip