The classic Porro prism binoculars are rugged and compact, making it the ideal traveling companion. The lenses and prisms of BK-7 glass provide high image quality. Focusing takes place via a convenient center focusing knob. Thanks to the diopter adjustment these binoculars are suitable for spectacle wearers.

The body of the National Geographic 8x40 Porro binoculars is provided with a rubber coating, which together with the ergonomic shape provide for a solid grip. For comfortable long-term observations, a tripod thread is integrated.