Product Dimensions:10.63 x 5.91 x 1.97 inches Item Weight:1.81 pounds New Mirage is the porro binocular susitable for people starting their nature watching experience. Standard Porro prism optics are used. These binoculars have a traditional design but are lightweight. A large focusing ring in the center of the body makes it easy to adjust the focus. The objective lens has a large aperture of 50mm and has excellent light-collecting power, so it is recommended not only for nature watching but also for observing the starry sky at night. Specifications Magnification: 16x Objective lens effective diameter: 50mm Coating: Magenta Coating Angular Field of View (Real): 3.5 Angular Field of View (Apparent): 52.1 Field of view at 1000m: 61.1m Exit pupil diameter: 3.1mm Brightness: 9.7 Interpupillary Distance: 58.5 - 72mm Eye relief: 12.1mm Shortest focusing distance: 10.7m Size: 167 x 65 x 198mm (6.57 x 2.55 x 7.99inch) Weight: 820g (1.80lbs) The entry level porro binocular suitable for peopple starting nature watching experience. Bright field of viewThe objective lens has a large aperture of 50mm and has excellent light-collecting power. Large focus ringEasy focusing with the ring in the center of the body. A strap and a soft case are included. Magnification: 16x / Objective lens effective diameter: 50mm The entry level porro binocular suitable for peopple starting nature watching experience. Bright field of viewThe objective lens has a large aperture of 50mm and has excellent light-collecting power. Large focus ringEasy focusing with the ring in the center of the body. A strap and a soft case are included. Magnification: 16x / Objective lens effective diameter: 50mm