Kingscope 3X25 Vintage Opera Glasses Binoculars for Theater Musical Concert (Blue, with Chain)

Opera glasses, also known as theater binoculars, are compact, low-power optical magnification devices, usually used at performance events, whose name is derived from traditional use at opera performances. Magnification power below 5x is usually desired in these circumstances in order to minimize image shake and maintain a large enough field of view. A magnification of 3x is normally recommended. The design of our modern opera glasses of the ornamental variety is based on the popular lorgnettes of the 19th century. Magnification: 3x Objective Diameter (Aperture): 1 Interpupillary Distance (IPD): 2.28-2.76 Focus Mode: Central focusing Net Weight: 0.35lb(approx.) Package Weight: 0.41lb(approx) Package Included: 1 x Binocular, 1 x Cleaning Cloth, 1 x Soft Pouch, 1 x User Guide