Universal binocular area of use travel magnification 8 x lens diameter 28 mm prism system roof exit pupil diameter 35 mm min focus distance 4 m angle of view 63 field of view in 1000 m 109 m twilight factor 15 relative brightness 12 25 focussing system central focus viewing straight binocular coating multi coated weight 550 g special features for spectacle wearers outdoor function waterproof