The Nikon PROSTAFF P7 10x42 Binoculars in black are full-size, multi-coated optics with a 42mm objective lens diameter. They feature a wide-field lens, waterproof and fogproof construction, anti-reflection coating, and a locking diopter ring. With a maximum magnification of 10x, these binoculars have a roof/dach prism optical design, making them ideal for outdoor activities and wildlife observation.