Outdoor binoculars hunting binoculars area of use nature hunting outdoor sports magnification 7 x lens diameter 35 mm prism system porro exit pupil diameter 5 mm min focus distance 6 m angle of view 8 field of view in 1000 m 140 m twilight factor 157 relative brightness 25 viewing straight binocular coating fully coated weight 595 g eye relief 12 special features rubber armouring prismenglas bk 7