Universal binocular area of use watersports travel nature magnification 8 x lens diameter 36 mm prism system roof exit pupil diameter 45 mm min focus distance 25 m angle of view 7 field of view in 1000 m 122 m twilight factor 17 relative brightness 20 25 focussing system central focus viewing straight binocular coatings fully multi coated p2 phase coating emerald weight 580 g outdoor function waterproof