High-quality, waterproof, nitrogen-filled Helios large binoculars with single eyepiece focusing, especially for terrestrial observation at medium and long distances as well as astronomy. The lenses are equipped with BaK-4 prisms and fully broadband multi-coated optics. The binoculars have an adjustable tripod mount so that they can be optimally balanced on a tripod. The mechanical construction consists of CNC machined metal components. The Helios binoculars are black rubberized and come in a case. Scope of delivery: 20×80 binocular case! Power supply and batteries are not included!