Universal binocular area of use nature travel magnification 10 x lens diameter 42 mm prism system roof suitable for beginner intermediate exit pupil diameter 42 mm min focus distance 24 m angle of view 65 field of view in 1000 m 113 m twilight factor 205 relative brightness 17 64 focussing system central focus viewing straight binocular coating fully multi coated weight 751 g eye relief 22 material magnesium colour black included