Universal binocular area of use travel nature magnification 10 x lens diameter 42 mm prism system roof exit pupil diameter 42 mm min focus distance 2 m angle of view 66 field of view in 1000 m 115 m twilight factor 205 relative brightness 17 64 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating bak4 weight 750 g eye relief 21 special features for spectacle wearers rubber armouring outdoor