Universal binocular area of use nature travel magnification 10 x lens diameter 25 mm prism system roof suitable for beginner intermediate exit pupil diameter 25 mm min focus distance 3 m angle of view 5 field of view in 1000 m 87 m twilight factor 158 relative brightness 6 25 diopter correction 3 0 dpt focussing system central focus viewing straight binocular coating fully multi coated weight 300 g colour black additional functions