​【Product Description】 This is a Seiko "Chaba" "Bullhead" watch, manufactured in January 1976. It's a rare domestic model (Speed-Timer with Kanji day of the week), and it's fitted with a valuable genuine stainless steel bracelet with the "5 SPORTS" engraving. Operation: Currently running. Chronograph functions (start, stop, reset) are also working. Exterior: It has minor scratches appropriate for its age and slight scratches on the crystal, but there are no major dents, making it a generally clean example that is rarely seen on the market. It retains its original appearance. Details: Cal.6138 / Serial 613441 / Genuine bracelet ※ Please understand that this is a vintage item from approximately 50 years ago, and it is sold as-is with no returns accepted. It will be carefully packaged and shipped.