The Nikon PROSTAFF P7 10x42 Binoculars medium -size binoculars with a 10x magnification and a 42mm objective lens diameter. They feature a roof/dach prism optical design, multi-coated lens coating, and anti-reflection coating. The binoculars are waterproof, weather-resistant, and fogproof, with a nitrogen-filled body. They have a wide-field lens, diopter adjustment, and center focus type. The binoculars have a 367' field of view at 1000 yards and weigh 21.2 oz. They come in black and have a 15.7mm eye relief.