The Cyclops Bronte's flashlight is made using a 6063-T6 aluminum alloy in an anodized finish. The flashlight performs with a brightness of 2000 lumens and a light range up to 437 yards. Run time is up to 2 consecutive hours. This flashlight is built for any environment. Truly a remarkable light that you can keep in your truck, toss in your hunting backpack, or place in a drawer at home in case of an emergency.