The Z series features the top products from the PENTAX Sport Optics range. This series consists exclusively of premium-quality roof prism binoculars that catch the eye of even the most critical observers. All binoculars in this series are manufactured in Japan. The ED series includes ED lenses along with an additional dielectric coating. This elevates color brilliance and fidelity to an extraordinary level, appealing especially to the most discerning users and dedicated observers. Optimal light transmission is one of the most important aspects of a binocular's viewing quality. This is also the focus of the new technologies for the current PENTAX Sport Optics series. The full multi-coating on all lenses is considered the new standard coating. It enhances light transmission and contrast while minimizing reflections and providing excellent color fidelity. Multiple coatings on all lenses, enhanced light transmission coating, phase correction, water-repellent coating on the outer lenses, nitrogen filling, and a continuous rubber armor for protection and a secure grip are all included.