BRIGHTNESS: Features a 5mW peak, 620-670nm, Class 3R visible red laser - the brightest beam allowed by law
EASE OF USE: Activation button engages the laser immediately when the firearm is held in a normal firing grip - This is the feature that sets Crimson Trace apart from the rest
RUNTIME: Over 4 hours of battery life
EASY INSTALLATION: User installed- No gunsmithing required - Factory sighted at 50 feet, but is fully user adjustable for Windage and Elevation with provided tool
FITS: Smith & Wesson K & L Frames Square Butt
SPECS: This Class IIIA (IIIR) Red laser sight has a maximum output power of ≤ 5mw featuring a wavelength of 650 nm with a beam range of 40 meters in high illumination (lux) direct sunlight conditions to over 400 meters at night.
GUARANTEED: This product is covered by the Crimson Trace Protect Limited Lifetime Warranty. For questions or concerns regarding warranty, please visit the Crimson Trace website.