Compact binoculars monocular area of use travel nature theatre magnification 10 x lens diameter 25 mm prism system roof suitable for beginner exit pupil diameter 25 mm min focus distance 4 m angle of view 55 field of view in 1000 m 96 m twilight factor 158 relative brightness 6 25 focussing system individual focus viewing straight binocular monocular coating bk7 weight 114 g material plastic colour blue included in delivery pouch