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 25 m angle of view 7 field of view in 1000 m 122 m twilight factor 183 relative brightness 27 56 focussing system central focus viewing straight binocular coating fully multi coated weight 730 g eye relief 19 outdoor function waterproof