ExtremeBeam SX21 Blackbird Tactical Flashlight EB-AE-B01 is an extremely durable, high performance flashlight meant to excel at military and law enforcement applications. This potent ExtremeBeam flashlight features a sturdy aluminum housing that is double-sealed, shock-resistant, and IPX-8 waterproof, and it utilizes a shatter-resistant glass lens for added ruggedness. Equipped with the high-intensity white LED light that ExtremeBeam has built into most of their tactical flashlights, the Extreme Beam SX-21 Black Bird Waterproof Flash Light is fully focusable and pumps out 310 lumens up to 900 feet in the distance, allowing you to illuminate any environment with perfect color fidelity. The flashlight is efficient as well, capable of running for over seven hours on one 18650 battery or two CR123 batteries. For a perfect duty or tactical flashlight that you'll be able to use for years to come, pick up an Extreme-Beam SX21-H0 Blackbird 310 Lumen Weapon Light.