Universal binocular area of use watersports travel nature magnification 8 x lens diameter 32 mm prism system roof suitable for beginner intermediate exit pupil diameter 4 mm min focus distance 18 m angle of view 75 field of view in 1000 m 131 m twilight factor 16 relative brightness 16 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coatings fully multi coated p2 phase coating v max coating emerald