The Crimson Trace RailLight is the next generation in pistol mounted lights. Made of Aerospace Aluminum, with no exposed fasteners in a snag-free design, you will be hard pressed to find a better option. The downward facing Red LED Walking Light will allow maneuvering without affecting your vision at night if needed. The Red LED Walking Light is independently enabled/disabled at the user s discretion and is activated using CT Motion "shake to wake" functionality. Product Specifications FIT: Universal Accessory Rail LUMENS: 1,000, 500, 250, 100, 5 Variable Dimming INSTANT ACTIVATION: Yes RUNTIME: 1 Hour MODES: On (with presets), Off, Adjustable, Strobe, Momentary CONSTRUCTION: Aluminum WATER RESISTANCE: IPX4