SEIKO Seiko ★ Self Dater ★ Automatic men's wristwatch. The leather belt is an aftermarket product. The back cover has a Sea Lion engraving. ★ Sometimes it runs for a long time when shaken, and sometimes it stops immediately. It is unstable, so I think it needs repair. Also, when pulling the crown to move the hands, it rotates more smoothly counterclockwise than clockwise. Please consider it for collection or restoration, and purchase it as a junk item. Thank you.