Universal binocular area of use watersports travel nature magnification 10 x lens diameter 42 mm prism system roof exit pupil diameter 42 mm min focus distance 25 m angle of view 6 field of view in 1000 m 104 m twilight factor 205 relative brightness 17 64 focussing system central focus viewing straight binocular coatings fully multi coated p2 phase coating emerald weight 600 g outdoor function waterproof