Monocular spotting scope area of use nature hunting bird watching wildlife watching golf magnification 10 x lens diameter 42 mm prism system roof exit pupil diameter 42 mm min focus distance 19 m angle of view 65 field of view in 1000 m 113 m twilight factor 205 relative brightness 17 64 viewing straight monocular coating fully multi coated weight 374 g eye relief 15 outdoor function waterproof prismenglas bak 4