·Cree XP-G2 (R5) LED with a lifespan of 50,000 hours ·Uses two AA (Ni-MH, Alkaline ) batteries ·156mm (Length) x 21.5mm (Diameter) ·60-gram weight (excluding batteries and body clip) ·Digitally regulated output maintains constant brightness ·Reverse polarity protection guards against improper battery installation ·Anti-roll, slip-resistant body design ·Push-button tail cap switch with momentary-on function ·Side mode switch in the front, fast and convenient·Made of durable aircraft-grade aluminum ·Premium Type III hard-anodized anti-abrasive finish ·Toughened ultra-clear glass lens with anti-reflective coating