Universal binocular area of use watersports travel nature magnification 8 x lens diameter 42 mm prism system roof exit pupil diameter 525 mm min focus distance 3 m angle of view 65 field of view in 1000 m 113 m twilight factor 183 relative brightness 27 56 focussing system central focus viewing straight binocular coatings fully multi coated p2 phase coating v max coating emerald weight 680 g outdoor function waterproof