The Antique E.B. Meyrowitz New York Opera Glasses are mid-size binoculars made of brass and leather, with a maximum magnification of 3x. These opera glasses feature a Galilean optical design and a zoom lens for enhanced viewing. Lightweight and stylish, these binoculars were crafted in the United States by the renowned brand E. B. Meytowitz. Perfect for opera enthusiasts and theater-goers looking to enhance their viewing experience, these vintage opera glasses offer a classic and elegant design with modern functionality.