Outdoor binoculars area of use hunting outdoor sports magnification 8 x lens diameter 42 mm prism system roof exit pupil diameter 525 mm min focus distance 21 m angle of view 78 field of view in 1000 m 136 m twilight factor 183 relative brightness 27 56 focussing system central focus viewing straight binocular coating fully multi coated weight 700 g eye relief 20 special features rubber armouring outdoor function waterproof