Monocular area of use watersports magnification 8 x lens diameter 25 mm prism system roof exit pupil diameter 313 mm angle of view 7 field of view in 1000 m 122 m twilight factor 141 relative brightness 9 8 focussing system central focus viewing monocular coatings multi coated bak4 weight 160 g special features rubber armouring outdoor function waterproof