Universal binocular area of use nature travel magnification 9 x lens diameter 42 mm prism system roof suitable for beginner intermediate exit pupil diameter 467 mm min focus distance 25 m field of view in 1000 m 131 m twilight factor 194 relative brightness 21 81 focussing system central focus viewing straight binocular coating fully multi coated weight 640 g colour black special features rubber armouring outdoor function waterproof for