Utilizing the latest C4A(R) LED technology this ultra compact and lightweight flashlight is optimized for output and run time. C4A(R) LED technology, with a 50,000 hour lifetime. Unbreakable and scratch resistant polycarbonate lens. Up to 683 candela peak beam intensity, 28 lumens typical, 2.25 hours runtime. One "AAA" alkaline battery. Push button tail switch - momentary or constant on operation. Tailcap switch for momentary on/off. O-ring sealed, shock proof and drop-tested construction. Water resistant per IPX4; in accordance with specification EN 60529:1992. High Strength "Break Away" safety lanyard. Unbreakable pocket clip. L x D: 3.5" x .6" (90 x 15 mm) 1.04 oz (29.7 g) Matte Black