Very nice set of WWI vintage Carl Zaeiss binoculars. I don't know much about how the dials work but the optics seem to be nice and clear. Lense plate is present and should be fed through the strap but I do not want to mess with the strap buttons. Case is really neat with the original label and wool padding.. Shoulder strap on case is broken. All in all, a nice, early set that is hard to find these days.