Outdoor binoculars area of use nature outdoor sports magnification 8 x lens diameter 32 mm prism system roof exit pupil diameter 4 mm min focus distance 17 m angle of view 75 field of view in 1000 m 131 m twilight factor 16 relative brightness 16 focussing system central focus viewing straight binocular coating fully multi coated weight 454 g eye relief 17 special features rubber armouring outdoor function waterproof prismenglas bak 4