Nikon Travelite VI 10x25 Porro Prism 10x 25mm Objective Lens Binoculars, Type, Magnification, (T610X25)

Apparent field of view: 47.2° (calculated using a formula based on reference standard ISO 14132-1:2002) Brightness: 6.3 Eye relief: 11.1mm Exit pupil diameter: 2.5mm Visibility at 1000m: 87m Close distance (shortest focusing distance): 3.0m