This rubber armored, individual focus roof prism binocular appears to be patterned after similar models from Zeiss and Nikon, though it has a wider field of view.   External surfaces of the optics are multicoated, but internal surfaces do not appear to be.  The roof prisms probably do not have phase corrected coatings.   The image is lacking a bit in contrast and brightness when compared to a good porro prism model.  The eye relief is also a bit short, so I would only rate the performance as fair, though it has a nice wide field of view for such a compact package.