Universal binocular area of use nature travel magnification 10 x lens diameter 42 mm prism system roof exit pupil diameter 42 mm min focus distance 25 m angle of view 65 field of view in 1000 m 113 m twilight factor 205 relative brightness 17 64 focussing system central focus viewing straight binocular coating multi coated special features for spectacle wearers outdoor function waterproof