The Alpen Rainier EDHD 10x42 Waterproof Fog Proof Prism Roof Binoculars Model 77 is a high-quality and durable hunting binocular featuring a 10x magnification and 42mm objective lens diameter. With its coated lenses and waterproof, fogproof features, this binocular provides clear and sharp images in various weather conditions, making it an essential tool for hunters and outdoor enthusiasts. The Alpen brand is known for producing reliable and versatile optics, and this model is designed to meet the needs of users looking for a full-size, top-of-the-line binocular for their hunting adventures.