Outdoor binoculars area of use bird watching outdoor sports hunting magnification 10 x lens diameter 42 mm prism system roof exit pupil diameter 4 mm min focus distance 25 m angle of view 64 field of view in 1000 m 113 m twilight factor 205 focussing system central focus viewing straight binocular coating fully multi coated weight 680 g material rubber outdoor function waterproof format standard prismenglas ed