Sightmark LoPro Mini Green Laser Sight delivers pinpoint accuracy in any light with a class IIIa laser capable of reaching out to 600 yards at night (50 yards in daylight). The LoPro Mini Green Laser Sight features IPX5 weather-resistant and shockproof reliability, digital switch operation, push-button or pressure-pad operation, windage and elevation adjustments, and up to 18 hours of operation from a single CR123A battery.