Uarter Opera Glasses Theater Vintage Binoculars with Handle CENTRAL FOCUSING WHEEL IN THE MIDDLE:Adjust manually the focus of sharpness to achieve the effect of high definition .If you want to look far away, please twist the wheel to the right. Oppositely, if you want to watch closer distance, please twist the wheel to the left with clear image.pls refer the picture if you still didnot know how to use it Field of View: 40.95" Central Focus Opera Binoculars OPTICS LENS -- 1" Optics Lens Delivers clear, sharp & detailed images POWER:It has 3 Power Magnification for indoor viewing, Specially suitable for theaters and horserace PACKAGE:Elegant Foldable Handle, Cleaning cloth and Bag Pouch is included.