Features: Cree XP-G LED (R5) with lifespan of 50000 hours Two modes of output selected by turning the bezel (Patented): Turbo Mode: 285 Lumens 2.7 hours (18650 Li-ion) General Mode: Constant 60 Lumens 14 hours (18650 Li-ion) Max beam length: 200 meters Digitally regulated output - maintains constant brightness Uses 18650 Li-ion or two 3V CR123A lithium batteries Anti-reverse protection 135mm (Length) x 25.4mm(Diameter) x 34mm(Head) 152-gram weight (excluding batteries) Made of durable aircraft-grade aluminum Premium Type III hard-anodized anti-abrasive finish Waterproof to IPX-8 Standard Toughened ultra-clear glass lens with anti-reflective coating Tactical tailcap switch with momentary-on function Anti-roll slip-resistant body design Included accessories: one holster lanyard rubber switch boot and two spare o-rings