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 2 m angle of view 83 field of view in 1000 m 145 m twilight factor 183 relative brightness 28 1 focussing system central focus viewing straight binocular coating multi coated weight 665 g eye relief 17 colour black special features for spectacle wearers rubber armouring outdoor