The new Polysteel line exemplifies the ultimate flashlight for anyone who works or plays in rough-and-tough environments. The Polysteel 400 flashlight is designed for extreme durability, with Coast's trademark Pure Beam Focusing technology. It's unique from the inside out, as it comes with a tough, stainless steel core that's wrapped in a grip textured nylon polymer. This construction allows for the lights to withstand some of the toughest and most brutal environments and conditions. Using 4 X AAA batteries, you will get a runtime up to 29 hours on low. The lights Pure Beam Twist Focusing technology to ensure that not only will you have a light that is durable, but a light that maintains our advantage in beam quality as well with the Ultra View Flood & Bulls-Eye Spot Beams. With 440 Lumens and a maximum beam distance of 688 feet, the Polysteel 400 combines durability with our focusing and beam technology. Backed by Coast's lifetime . against defects in materials and workmanship. Tested and rated to ANSI/FL1 standards.