Cree XP-E LED (R2) with lifespan of 50,000 hours Three levels of brightness, Mid (95 lumens,3 hrs) -> Low(6 lumens,64 hrs) -> High(190 lumens,1 hr) Max beam length: 110 meters Digitally regulated output - maintains constant brightness Powered by one 3V CR123A lithium batteries 73mm (Length) x 19mm (Diameter) 24-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 Reliable twist switch(Patented) Capable of standing up securely on a flat surface to serve as a candle Included accessories: lanyard, two spare o-rings, body clip