Universal binocular area of use watersports travel nature magnification 8 x lens diameter 30 mm prism system roof exit pupil diameter 38 mm min focus distance 2 m angle of view 83 field of view in 1000 m 145 m twilight factor 1549 relative brightness 14 4 focussing system central focus viewing straight binocular coating multi coated weight 435 g eye relief 56 included in delivery lens caps shoulder strap special features for spectacle