Compact binoculars outdoor binoculars area of use travel watersports outdoor sports magnification 8 x lens diameter 22 mm prism system roof exit pupil diameter 275 mm 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 coating high contrast weight 210 g special features for spectacle wearers rubber armouring outdoor function waterproof