Outdoor binoculars hunting binoculars underwater binoculars area of use nature hunting outdoor sports magnification 8 x lens diameter 25 mm prism system roof exit pupil diameter 313 mm min focus distance 46 m angle of view 82 field of view in 1000 m 142 m twilight factor 141 relative brightness 9 8 focussing system central focus viewing straight binocular coating multi coated weight 369 g eye relief 12 special features for spectacle wea