Since the battery is dead, the operation has not been confirmed. This is a hand-wound vintage watch from Hamilton, a long-established American manufacturer. It's from the 1950s. It has a retro design typical of antique watches, with a white dial, gold indexes, and a small seconds subdial. The case is 10K gold-filled, and the case back is stamped with "10K GOLD FILLED." The following is a quote from the internet: The movement is a USA-made Cal.987A, and it maintains good condition with an accuracy of within 1 minute per day. Both the movement and the appearance are in good condition, making it a recommended item. The strap has cracks on the back, so please replace it yourself. It is usable. Management number: F1