Compact binoculars area of use travel theatre nature magnification 8 x lens diameter 22 mm prism system roof exit pupil diameter 275 mm min focus distance 5 m angle of view 71 field of view in 1000 m 123 m twilight factor 133 relative brightness 7 56 focussing system central focus viewing straight binocular weight 226 g special features rubber armouring outdoor function waterproof prismenglas bak 4