Universal binocular polycarbonate frame twist up eyecups area of use nature travel magnification 8 x lens diameter 25 mm prism system roof exit pupil diameter 31 mm angle of view 72 field of view in 1000 m 125 m twilight factor 14 relative brightness 9 61 focussing system central focus viewing straight binocular coating fully multi coated weight 343 g eye relief 14 included in delivery lens caps lanyard rainguard manual pouch cleaning