Konus Regent HD 10x42 binoculars with high definition system. Waterproof and fogproof. Multi Coated optical treatment: multi-layer treatment on a single surface of the lens to facilitate light transmission and to increase the quality and brilliance of the image.BAK-4 prisms composed of barium glass for a brighter image roof mount containing overlapping prisms that are aligned to the lenses in a straight line thus obtaining a low volume binocular.Long Eye Relief system which reduces eye strain and is more comfortable for those who wear glasses. Manual and central focus.Diopter adjustment: system that allows you to compensate in the case of a difference between one eye and the other the value of the diopters within a limit of +/-2. Adjustment of the interpupillary distance.10x magnification objective diameter 42 mm. W.A. system Wide Angle for a wider field of vision than the standard with the same magnification it is therefore possible to frame a larger portion.