Universal binocular area of use watersports travel nature magnification 8 x lens diameter 42 mm prism system roof exit pupil diameter 53 mm min focus distance 25 m angle of view 8 field of view in 1000 m 140 m twilight factor 183 relative brightness 28 1 focussing system central focus viewing straight binocular coating multi coated weight 650 g eye relief 17 special features for spectacle wearers rubber armouring outdoor function water