2010 Olight M21 Warrior with SST-50 LED SpecificationLuminus SST-50 LEDColours availableBlackWeight 119g(4.2oz) without batteriesDimensionsLength145.5mm (5.7") Bezel Diameter40.2mm (1.6") Body Diameter24.80mm (0.98")Functions Three brightness levels plus strobe, 20lm (30hrs)-80lm (8hrs)-500 lm (1.2hrs), Strobe(500lm/2.4h)to select modes loosen then retighten head.BatteryUses 2x CR123A 3.0v Lithium cells (Non Rechargeable) or Rechargeable Li-ion 3.7v cells either 2x RCR123A/16340, 1x 3.7v Li-ion18650 or 1x 17670.Accessories included Holster, Lanyard, Spare O-Rings, Spare fluorescent Tailcap Rubber Boot,CR123A Battery magazine, Ring cover for replacement of cigar holdAccessories OptionalRemote Pressure Switch, Weapon Mount (Fits Picatinny/Weaver rail), Filters (Green, Red or Blue) & Beam Diffuser.Features:World-class super bright Luminus SST-50 LED and max outputThree output levels and strobe, simple interface to adjust output,loosen head then retighten to select modes.Automatic memory function, remember last used setting and can be preset to specific output mode for instant access.Multiple battery choices, uses both Li-ion Rechargeable & Non Rechargeable Lithium Batteries to provides the ultimate power to weight ratio and reliability.Ultra Efficient Advanced Digital Power Management System for a smooth and even brightness over the duration of battery life.Superior heat sink for quick dispersion of heat to protect LED and electronic components and ensure long life.Tactical switch with momentary-on function, strike shroud and lock-out function to prevent accidental activation, protruding tailcap button for easy operation.Ergonomic design, solid aluminium construction .Tough durable Type III Hard AnodizationBuilt to meet Mil-specMIL-STD-810F.O-Ring sealed to provide excellent water resistance and long service life.Grip ring with anti-rolling design, enabling use with the different tactical holds, removable to convert to smoother straight body.Stainless steel strike bezel (Removable).Stainless steel pocket clip (Removable).Ultra Clear Glass lens, non scratch with Anti-Reflective Coating.Heavy duty quick release lanyard to prevent loss and easy access.Full Textured (orange peel) Reflector provides a perfectly wide beam.Battery magazine use with CR123A batteries, hold batteries firmly to provide excellent continuity and battery life under heavy shock or recoil.