An Orient ring watch, likely from the 1970s, with a 21-jewel hand-winding movement. Overall in very good condition, but there is some dirt on the stone. If the stone could be polished, it would be nearly perfect. It's a shame because the watch itself is very clean. It is running. I wound it by hand about 6 hours ago, and it hasn't lost much time, so it should function as a watch without problems for everyday use. The hand in the photos is a mannequin's. The ring size is adjustable. The last photo shows the time measurement after 12 hours; the watch function is acceptable.