Fenix E10 LED Flashlight Philips Luxeon Rebel LED bulb offers 55 lumens of brightness and has a lifespan of 50,000 hrs Constructed of durable aircraft-grade aluminum with a hard-anodized, anti-abrasive finish Toughened ultra-clear glass lens features an antireflective coating Waterproof to IPX-8 standards Uses 1 AA battery, not included