Compact binoculars area of use watersports travel magnification 8 x lens diameter 42 mm prism system roof exit pupil diameter 525 mm angle of view 74 field of view in 1000 m 129 m twilight factor 183 relative brightness 27 56 diopter correction yes dpt focussing system central focus viewing straight binocular coating multi coated special features for spectacle wearers rubber armouring outdoor function waterproof