COMPACT RAIL MOUNTED TACTICAL LIGHTC4A(R) LED delivers 5000 candela peak beam intensity; 110 lumens.Parabolic reflector produces a concentrated beam with optimum peripheral illumination.Optimized electronics provide regulated intensity.Runs 1.5 continuous hrs. to the 10% output levelWeighs 2.32 ounces (65.8 grams) with included batteryLength - 2.71 in. (6.88 cm)Width - 1.18 in. (3.00 cm)Height - 1.51 in. (3.84 cm)Includes 6 interchangeable keys to fit a wide variety of weaponsRail clamp designed to rapidly attach/detach from side of weapon. One handed snap-on and tighten interface keeps hands away from muzzle when attaching/detachingAmbidextrous momentary/steady On-Off switchBody constructed of impact resistant Engineering polymerFace cap constructed of 6000 series machined aircraft aluminum with anodized finishBorofloat high temperature glass lensWaterproof to 1 meter for 30 minutes. IPX7 ratedOperating temperature: -40AdegF to +120AdegF.Powered by one 3V CR2 lithium batterySerialized for positive identificationLimited lifetime warrantyAssembled in USA