Viridian C5L Universal Green Laser Sight and Tac Light for Sub-Compact Handgun Pistols, ECR Instant On Technology VIRIDIAN GREEN LASER: This compact green tactical laser utilizes a precise 532nm wave length for a more visible targeting dot in day or night, indoors or outdoors. 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. ECR INSTANT ON: No fumbling with buttons in critical situations. When you draw, it's on! BATTERY LIFE: 4+ hours in constant laser mode, 7+ hours of pulsing laser mode, or 60 minutes in tac laser and light mode. LIGHT MODES: Choose from a green laser, constant light, multiple pulse light modes, or laser and light mode.