Universal binocular area of use nature watersports travel magnification 8 x lens diameter 42 mm prism system roof exit pupil diameter 525 mm min focus distance 2 m angle of view 74 field of view in 1000 m 129 m twilight factor 18 relative brightness 27 6 focussing system central focus viewing straight binocular coating fully multi coated weight 630 g eye relief 18 material plastic colour green special features for spectacle wearers r