Welltop 3X25 Binocular Telescope Opera Glasses Coated Theater/Opera Glass Lady Glass Handle Telescopio (White) Lens loupe made of BK7 optical glass. 25mm Optics Lens - Delivers clear, sharp & detailed images. Field of view: 105m; Central Focus. Elegant Lorgnette Foldable Handle; Cleaning cloth and Bag Pouch is included. 3 Power Magnification for indoor viewing, specially suitable for theaters.