Product Description Product Info for Swarovski 12x42 NL Pure Binoculars The 15x56 SLC Binoculars from Swarovski combine extra-low dispersion (HD) glass elements and a range of proprietary optical coatings with a weather-resistant magnesium-alloy housing to create a multi-purpose set of glasses that delivers impressive image quality and durability. This configuration of the SLC displays an immersive 62�° apparent viewing angle; a long 16mm eye relief and multi-position twist-up eyecups enable a comfortable viewing distance for almost any observer. Swarovski uses an Abbe-Koenig prism design for the 56mm SLC model, which maintains a streamlined form factor without sacrificing image quality. The prisms are phase corrected to enhance sharpness and reduce chromatic aberration. And each of the fluorite-containing HD glass elements is finished with multiple layers of SWAROTOP anti-reflective lens coating. Resulting images transmitted by the SLC optical path are rich with detail and saturated with lifelike color. Swarovski 58291 Specs Prism Type Roof Performance Magnification 15x Objective Lens Diameter 56 mm Angle of View 4.5�° (Actual) Field of View 234' @ 1000 yd / 77.69 m @ 1000 m Minimum Focus Distance 12.8' / 3.9 m Exit Pupil Diameter 3.7 mm Eye Relief 16 mm Interpupillary Adjustment 55.9 to 76.2 mm / 2.2 to 3" Diopter Adjustment -5 to +5 Focus Type Center Features Fogproof Yes, Nitrogen Filled Water Resistance Waterproof General Dimensions 7.6 x 5.6 x 2.9" / 193.04 x 142.24 x 73.66 mm Weight 42.3 oz / 1.2 kg Packaging Info Package Weight 5.18 lb Box Dimensions (LxWxH) 12.4 x 10.3 x 3.75"