Outdoor binoculars area of use hunting watersports nature travel outdoor sports magnification 8 x lens diameter 25 mm prism system porro exit pupil diameter 313 mm min focus distance 3 m angle of view 6 field of view in 1000 m 105 m twilight factor 141 relative brightness 9 8 focussing system central focus viewing straight binocular coating multi coated weight 270 g special features rubber armouring