Partner With Power. Developed as a backup light for law enforcement professionals, the E1B&&';;s performance and durability have helped heroes in all walks of life. The latest version features our broad, useful MaxVision BeamA(R), which shapes the output into a smooth seamless beam that keeps you aware of your surroundings. It&&';;s the perfect partner for close-range applications, with two useful outputs - 400 lumens and 5 lumens - and it&&';;s programmed to lead with high output, just like a tactical/self-defense light should. Use it to confidently deal with friend or foe. Features High-performance LED and specially developed reflector create wide, smooth MaxVision BeamA(R) beam pattern Constructed of high-strength aerospace aluminum with Mil-Spec anodizing; stainless steel pocket clip; coated, tempered window Weatherproof; O-ring and gasket sealed Powered by a single energy-dense 123A battery with 10-year shelf life Backed by SureFire&';s No Hassle Guarantee