The Vivitar MV-1060 10 x 60 HD Zoom Binocular is based on a BK7 porro prism design and features large 60mm objective lenses with a 10x magnification power. In addition, the Binocular offers 5.8° angular field-of-view and a linear field-of-view of 300' (91.44m) @ 1000 yard (914.4m). Diopter adjustment allows for optimum visual correction, and a center wheel focus design simplifies focus adjustment. The multicoated high-definition lenses of the binocular reduce glare and ensure sharp image reproduction. An exit pupil diameter of 6mm makes the binocular suitable for use in low-light conditions.