DescriptionCompact & powerful, the Professional Tactical series flashlights offer high and low intensity modes, strobe mode and the latest in power LED technology. The combination of small size and output from the C4 LED result in one of the brightest tactical personal carry lights for its' size.Features 6000 series machined aircraft aluminum with anodized finish High, low and strobe modes C4 LED technology for extreme brightness Impervious to shock with a 50,000 hour lifetime LED Solid State Power Regulation provides maximum light output throughout battery life IPX7 rated design; waterproof to 1 meter for 30 minutes Anti-roll head/facecap Removable & unbreakable pocket clip Serialized for positive identification Rubber push button tail cap switch Impact-resistant tempered glass lens O-ring sealed Light Outputoptimized electronics provides regulated intensity Multi-function, push-button tactical tailswitch. One handed operation, variable intensity, or strobe mode Run Timeall claims to 10% of initial lumen output Meets applicable European Community directivesIncludes Streamlight PT 1L LED Flashlight1 Energizer CR123A Lithium Battery Nylon Holster Blister PackagingSpecifications DimensionsLength3.35 in. (8.51 cm) Head Diameter0.90 in. (2.29 cm)Major Diameter0.90 in. (2.29 cm) Barrel Diameter0.77 in. (1.96 cm)Weight 2.0 oz (57 grams) with batteryBattery Use1 CR123A Lithium Battery Colorblack C4 LED illumination output and run times:HIGH - 110 lumens/1.75 HoursLOW - 12 lumens/14 HoursSTROBE - 3 Hours