Viridian C5L-R Universal Red Laser Sight and Tac Light for Sub-Compact Handgun Pistols, ECR Instant On Technology RED LASER: This compact red tactical laser sight utilizes a precise advanced 635nm wave length for the brightest, sharpest and visible red targeting dot. Class 3R Laser Product (Does not exceed Class IIIA emission limits),  5mW power output RADIANCE TECHNOLOGY: 100 Lumens of bright light with horizontal light dispersion to better view threats across a wider area. Use the 140 Lumen strobe mode to disorient attackers. EASY ACTIVATION: Easily activate the world's brightest red laser and/or the LED light when drawn. No fumbling with buttons in critical situations. When you draw, it's on! UNIVERSAL MOUNTING SYSTEM: The modular rail set allows for quick mounting to virtually all railed handguns BATTERY LIFE: 20+ hours in constant laser mode, 35+ hours in laser pulsing mode, or 75 minutes tac laser and light mode.