Carl Zeiss Conquest MC Riflescope (Z-Plex Reticle, 3-9X40) Zeiss MC coating enhances light transmission, anodized finishes are remarkably durable, and nitrogen filling prevents fogging Classic, all-purpose 3-9x40 model provides excellent light-gathering ability for wide fields of view and sharp, contrasted images in low-light situations Zeiss MC coating enhances light transmission, anodized finishes are remarkably durable, and nitrogen filling prevents fogging 3-9X magnification, 40-millimeter effective lens diameter, and 13.3-to-4.4-millimeter exit pupil diameter; 41-millimeter eye piece tube diameter and 46-millimeter objective tube diameter; 12.9-inch length and 15.2-ounce weight Carl Zeiss products include warranties of lifetime on optical components; five years on electronic components; two years on camera components; and one year on carrying straps, lens caps, and similar accessories