Designed for astronomical and terrestrial viewing, the Konus 20x80 Giant Binoculars feature large, oversized 80mm objectives with anti-reflection optical coatings to produce images that are bright, clear, and crisp. This combination of objectives and coatings make them ideal for bird or nature watching, especially at low-light, and stargazing. The Giant combines the power of a telescope or spotting scope with the ease-of-use and depth of view provided by porro prism binoculars.