Pentax SP 20x60 WP

Premium optics. It is positioned by the manufacturer as marine binoculars due to a completely sealed body filled with nitrogen. The traditional configuration (Porro optical design) and large lenses (60 mm in diameter) are the reason why the Pentax 20x60 SP WP binoculars turned out to be quite large. The prisms are made of barium glass (BaK-4). The optics are coated with a multi-layer antireflection coating. Aspheric lenses have a complex shape that minimizes aberration. The outer surfaces of the lenses are coated to repel water drops, dirt and dust, so the device remains fully functional even in difficult weather conditions (such as rain, snow and fog). The die-cast aluminium body is finished with a thin layer of non-slip rubber.