Opera Binoculars, 3x25 Central Focus Opera Glasses with BAK-7 Prism and Handles for Adults, Concerts, Theater, Opera, Children, and Women (Reddish

BK7 optical glass lens magnifier 3x magnification for indoor viewing, especially suitable for theaters 25mm optical lens - provides a clear, crisp, and detailed image. Central focus, BAK-7 prism 6.5mm exit pupil, 105m/1000m field of view