Universal binocular underwater binoculars hunting binoculars outdoor binoculars area of use nature travel outdoor sports hunting magnification 10 x lens diameter 50 mm prism system porro exit pupil diameter 5 mm min focus distance 23 m angle of view 68 field of view in 1000 m 118 m twilight factor 224 relative brightness 25 viewing straight binocular coating multi coated weight 765 g eye relief 12 special features rubber armouring outdoo