Universal binocular area of use nature travel magnification 10 x lens diameter 42 mm prism system roof suitable for intermediate expert exit pupil diameter 42 mm min focus distance 25 m angle of view 69 field of view in 1000 m 121 m twilight factor 205 relative brightness 17 6 focussing system central focus viewing straight binocular coating multi coated weight 680 g eye relief 17 colour black special features for spectacle wearers