Outdoor binoculars area of use hunting watersports nature travel outdoor sports magnification 10 x lens diameter 25 mm prism system roof exit pupil diameter 25 mm min focus distance 5 m angle of view 6 field of view in 1000 m 87 m twilight factor 158 relative brightness 6 25 focussing system central focus viewing straight binocular coating multi coated weight 270 g special features rubber armouring