Sightmark LoPro Green Laser Sight(SM25016). Perfect for home defense, security teams and even hunting, the Sightmark LoPro Flat Dark Earth Mini Green Laser Sight delivers pinpoint accuracy in any light condition 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, hand-adjustable windage and elevation, and up to 18 hours of operation from a single CR123A battery. The LoPro Mini Green Laser Light mounts perfectly to Weaver and Picatinny rails. Laser Wavelength, nm: 520 + 10 nm. Laser Type: Class IIIa. Laser Visibility-Day: 50 yds. Laser Visibility-NightL: 600 yds. Battery life, hours: 18 hrs. Adjustment Value: 1 MOA. Elevation Range of Adjustment: 200 MOA. Windage Range of Adjustment: 200 MOA. On/Off Operation: Push button or pressure pad. Shockproof: Yes, 8ft / 2.4m. 32 to 120 / 0 to 49 F / C. Length (in/mm): 2.6 / 67.6 or 2.6 / 67 in / mm. Width (in/mm): 2.1 / 54 in / mm. Height (in/mm): 1.4 / 36 in / mm.