High-intensity adjustable light beam (Spot to Flood) Rugged machined aluminum construction with knurled design Anodized inside and out for improved corrosion resistance Innovative extended key lead allows the light beam and key to be used together in the same direction O-ring sealed Water and shock resistant Spare lamp safely secured inside the tailcap 1/2 turn twist focus spot-to-flood Patented Candle Mode High-strength aluminum alloy case Vented tailcap (patented) reduces chance of gas buildup Compact/lightweight construction Includes: SOLITAIRE Flashlight Key Lead Alkaline quot;AAAquot; Battery Dimensions: Overall Length: 3-3/16 in. 81.00 mm Barrel Diameter: 1/2 in. 12.70 mm. Head Diameter: 1/2 in. 12.70 mm Weight without battery: 0.45 oz. 12.76 g Weight with battery: 0.86 oz. 24.38 g Beam Candlepower @ 5 feet/1.5 meters:* 200 PBC Battery Life Continuous on time: 5 hours Lamp Life: 20 Hours Battery voltage output: 1.5 volts