Compact binoculars area of use nature travel magnification 8 x lens diameter 21 mm prism system roof exit pupil diameter 263 mm min focus distance 3 m angle of view 63 field of view in 1000 m 110 m twilight factor 13 relative brightness 6 92 focussing system central focus viewing straight binocular coating multi coated weight 195 g special features rubber armouring