The Alpina models are Vixen's top of the line in a roof-prism, waterproof binocular. Phase coating improves viewing with all optics fully multi coated. Long eye relief adds to your viewing enjoyment. These binoculars are nitrogen filled and fully waterproof. Features: 6.7? field-of-view at 8x.;Close Focus 2.2 yds ;Weight: 23.6 oz