The ultra compact LD50 outdoor flashlight provides unmatched flexibility and reliability. It can be powered by either one or two 18650 batteries. The side-by-side reflector plus separate circuit design make the light usable even when one of the LEDs is not powered. The ultra flat body and built-in belt clip make it comfortable to hold and easy to carry. Utilizing two CREE XM-L2 LEDs, LD50 offers 1800-lumen output, five bright levels and instant strobe function. Features Utilizes two Cree XM-L2 (U2) LEDs with a lifespan of 50,000 hours 5 Output Modes Turbo: 1800 Lumens High: 750 Lumens Mid: 350 Lumens Low: 140 Lumens Eco: 25 Lumens Instant Strobe: 1800 Lumens 886-foot/270-meter beam distance Digitally regulated output--maintains constant brightness Low-voltage warning function to remind you to replace the battery Reverse polarity protection guards against improper battery installation Over-heat protection to avoid high temperature on the surface Ultra compact flat body design Built-in belt clip Intuitive one-button operation Made of durable aircraft-grade aluminum Premium Type III hard-anodized anti-abrasive finish Toughened ultra-clear glass lens with anti-reflective coating Waterproof to IPX-8 standard. 6.5 feet/2 meters for 30 minutes Bundle includes Two EdisonBright CR123A lithium batteries