Viridian X5L Green Laser Sight and Tac Light, Universal Rail Mount, ECR Instant-On, Multiple Light Modes with TacLoc Holster VIRIDIAN GREEN LASER: This compact Viridian green tactical laser sights utilizes a precise 532nm wave length for a more visible targeting dot in the day or night, indoors or outdoors, permitting you to track your target quicker and more accurately. Class 3R Laser Product (Does not exceed Class IIIA emission limits),  5mW power output. LED LIGHTING TECHNOLOGY: 224 Lumens of bright light from a CREE LED. Spot light to blind assalients and strobe to disorient them. ECR INSTANT ON: Includes a Viridian TacLoc holster that utilizes Instant-On ECR which activates the world's brightest laser and/or 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: 4+ hours in constant laser mode, 7+ hours of pulsing laser mode, or 60 minutes in tac laser and light mode.