Viridian's E Series laser sight is built for the everyday concealed carry owner. This model-specific, trigger guard-mounted laser sight features the most powerful green laser legally available, providing fast and precise target acquisition when you need it most. Easily attach to the trigger guard of your pistol for secure and hassle-free installation in no time Features an ambidextrous on/off button with a 5 min auto shut-off, maximizing efficiency and battery life Provides a 100 yd range in daylight and an impressive 2 miles range at night for superior visibility A constant laser output with over 6 hr of battery life provides reliable performance Adjusting windage and elevation is made simple and quick, ensuring you can make precise adjustments with ease