The Z3 4-12x50mm is a 1-inch rifle scope that proves its strength in poor light conditions and over longer distances thanks to its 50 mm objective lens diameter and 12x magnification. Even in the 1-inch class you don't need to go without backup lighting and higher magnification. The Z3 4-12x50mm is designed to cope with these values - even with an incredibly lightweight design. Large Field of View: 29.1 feet at 100 yards 90% Light Transmission Weighs only 14.5 ounces. 1" Diameter Tube Mfg: Swarovski