One piece tube construction Illuminated Centerfire 500 reticle Dry-nitrogen filled 4-16x magnification 40mm objective 1/4 M.O.A. fingertip, resettable windage and elevation adjustment Illuminated CF500 reticle with crosshairs that light up Red or green. Ideal for varmints and long-range, big game hunting. Great for rifles, shot guns or muzzleloaders. Dusk & dawn brightness (DDB) multi-coated lens. One piece tube. Dry-nitrogen filled. 1" tube diameter. Adjustable objective Parallax adjustment. Field of view: 27/7 ft. At 100 yards. Length: 14.75". mounting length: 5.8". fast focus eyepiece. 1/4 MOA fingertip windage and elevation adjustment. Second Focal Plane. 100% waterproof, fogproof and shockproof. Weight: 16oz. Color: matte black.Can not ship international.