SEIKO Seiko, manufactured in 1991 Professional Diver 7C43-7010 Operational check completed. The accuracy is, as expected, from SEIKO quartz. Although only a visual comparison by an amateur with a radio-controlled watch, it's within 1 second per day. This is a rare model, and I believe it's in good condition for its age. As it is a vintage item, the operation has been confirmed, but future operation is not guaranteed. No returns or claims accepted. The band is in near-new condition. There may be errors in the description, but the item is as shown in the photos.