The Viridian Essential Laser Sight is a compact red tactical laser sight utilizing a precise, advanced 650nm wave length to generate the brightest, sharpest and visible red targeting dot. This allows the user to target quicker and more accurately. Simple, ambidextrous activation buttons make it easy to activate the laser. The red dot is visible up to 1 mile at night and up to 25 yards in daylight. Up to 6 hours of constant red laser time with a 5 minute auto shut off feature. The Viridian Essential Laser Sight allows you to get on target fast and have confidence that your rounds will impact where you want.