The Vintage 1970s Bushnell InstaFocus Binoculars are a classic piece of optics equipment with a 7x50 magnification and a 394-foot field of view at 1000 yards. These mid-size binoculars feature a Porro prism optical design and a 50mm objective lens diameter, providing clear and sharp images. Made in Japan by Bushnell, a reputable brand in the industry, these binoculars offer a tested and reliable viewing experience for all your outdoor adventures.