ACULON A211 delivers flawless optical performance at an attractive price. Multi-coated lenses and different lens diameters provide extremely sharp images and a wide field of vision. The use of spherical eye lenses, further enhances the impressive visual experience. The large diameter of the lenses provides a clearer and wider field of vision. Of Clear and sharp images thanks to multi-coated lenses The rubber coating provides extraordinary shock resistance and a comfortable and firm grip Magnification (x) 10 Lens diameter: 50 mm. Real field of view (°) 6.5 Exposed field of view (°) 59.2 Field of view at 1000 m (m) 114 exit pupil. (mm) 5. Brightness: 25 Distance between eye and eyepiece (mm) 11.8 Focal distance. Short (m) 7.0 Adjustable interpupillar distance (mm) 56-72 Length: 179 mm. Width (mm) 197 Weight (g) 900