The U series consists of binoculars in a Porro prism design. They are ultra-compact and feature a housing with synchronized adjustment of the interpupillary distance. The new full coating ensures high light transmission. Aspherical lens elements provide edge-to-edge sharpness. These binoculars are the perfect companion for nearly all applications. Optimal light transmission is one of the most important aspects for the viewing quality of binoculars and is at the core 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 improves light transmission and contrast while minimizing reflections and ensuring excellent color fidelity. BaK4 with high light transmission and resolution, multi-coating on all lenses, continuous rubber armor for protection and secure grip, synchronized adjustment of the interpupillary distance, central adjustment wheel for diopter setting, and aspherical lens elements for sharpness to the edges. Lightweight and compact.