The G2X Pro is a compact yet powerful polymer-body flashlight that uses a high-efficiency LED-virtually immune to failure since theres no filament to burn out or break-to provide two light output levels: a brilliant, penetrating, perfectly pre-focused 320-lumen beam, and a 15-lumen low-output setting that lets you greatly extend the runtime per set of batteries, an invaluable option when you find yourself miles from civilization. Press the tail cap switch for momentary-on low, press further to click constant-on low, return to off and press or click on again within two seconds for high. The tough Nitrolon(R) polymer body is smoothly sculpted for a comfortable, secure grip and resists scratches, abrasion, and corrosion. A polycarbonate micro-textured reflector delivers a comparatively wider beam with generous peripheral light. Features: Click-Type Push-Button Tailcap Switch Momentary and Constant-On Modes Temperature/Impact/Corrosion-Resistant Runs on Two 123A Batteries White LED Emitter Specifications: Brand: SureFire Lumens: 600 Lumens Type: Flashlight Model: G2X-D MPN: G2X-D-BK Lighting Technology: 1 x White LED 1.25" Diameter Bezel