Universal binocular area of use travel nature magnification 10 x lens diameter 50 mm prism system roof exit pupil diameter 5 mm min focus distance 28 m angle of view 66 field of view in 1000 m 115 m twilight factor 224 relative brightness 25 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating swaroclean weight 998 g special features for spectacle wearers outdoor function waterproof