Hawke Red Dot Sights Vantage RD 1x20, 9-11mm, 3 MOA dot 3 MOA red dot with 11-stage digital brightness control 25-layer multi-coated optics for maximum clarity Integrated 9-11mm-compatible mount Parallax-error free from 10 yds. High-quality aluminum construction Nitrogen-purged glass Waterproof Shockproof Fogproof 20mm objective weight: 4.4 oz. Two-year warranty Includes CR2032 battery, lens cloth, lens cover, installation tool and honeycomb sunshade