1.CREE led with lifespan of 100.000hours;2.Highly efficient OP reflector for excellent beam;3.Made of aircraft-grade aluminum;4.Hard-anodized finish/Black;5.Ultra clear tempered glass6.Tactical push button tail cap switch.7.Anti-roll,slip-resistant body design.8.Waterproof to IPX-6 standard;9.Accessories: holster, lanyard,two spare o-rings and spare switch. ModeVoltagePower/BatteryLumen(Max)Runtime(Max)Distance(Max)One(High)3-18V1*18650/2*16340/3*AAA280200min180mRemark: Two/Three/Five mode are also available. Measurements: Length:126.5mm Head Diameter: 33.5mm Tube Diameter: 27mm Tail Diameter: 27mm Weight: 120/140g Package: Neutral Packing(16mm*4mm*4mm)