The Simmons ProSport Porro 10x 25mm Binocular is a reverse Porro prism design. A reverse Porro prism means that the objectives are closer to each other than the eyepieces. This allows a lighter, more compact unit than the more commonly found straight Porro design. The single 10x power provides quite adequate magnification that simplifies the mechanical movements over a zoom optic. A wide 61.7deg. field of view is an opportunity to scan large areas of panoramic vistas or be able to watch the whole playing field at once. Multi coated optics affords brighter and sharper images with higher contrast. It weighs in at a very svelte 9 ounces with ridged and tactile surfaces for a non-slip feel. This is a straight-forward binocular that satisfies a multitude of utilitarian usages.