The Viking Peregrine 10x42 ED Binoculars are high-quality full-size binoculars with a 10x maximum magnification and a 42mm objective lens diameter. They feature fully multi-coated lenses and anti-reflection coating for clear and crisp images. These binoculars are waterproof, weather-resistant, dustproof, and fogproof, making them suitable for various outdoor activities. The optical design used in these binoculars is a roof/dach prism, ensuring a compact and lightweight construction. Ideal for birdwatching, wildlife observation, and other outdoor adventures, the Viking Peregrine 10x42 ED Binoculars offer excellent performance and durability.