{"product_id":"seiko-grand-seiko-5646-7010-1971","title":"Seiko Grand Seiko 5646-7010 (1971)","description":"\u003cp style=\"margin: 0in; font-family: Calibri; font-size: 11.0pt;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eThis watch has already been sold. Looking for a similar model? Contact us and we may be able to source one for you. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0in; font-family: Calibri; font-size: 11.0pt;\"\u003e \u003c\/p\u003e\n\u003cp style=\"margin: 0in; font-family: Calibri; font-size: 11.0pt;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eModel History:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0in; font-family: Calibri; font-size: 11.0pt;\"\u003eThe Grand Seiko 5646-7010 represents a milestone in Seiko's high-precision watchmaking from the early 1970s. Belonging to the revered 56GS series, this model was equipped with a hi-beat movement, capable of 28,800 beats per hour—an impressive achievement for its time. The 5646 caliber also introduced quickset day-date functionality and hacking seconds, catering to professionals seeking both elegance and functionality. Its subtle \"GS\" branding and gold medallion caseback symbolize Seiko’s quiet confidence in competing against Swiss chronometers.\u003c\/p\u003e\n\u003cp style=\"margin: 0in; font-family: Calibri; font-size: 11.0pt;\"\u003e \u003c\/p\u003e\n\u003cp style=\"margin: 0in; font-family: Calibri; font-size: 11.0pt;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul type=\"disc\" style=\"direction: ltr; unicode-bidi: embed; margin-top: 0in; margin-bottom: 0in;\"\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eReference: 5646-7010\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eSerial number: 171XXX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eProduction date: July 1971\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eMovement: Seiko 5646 automatic, hi-beat (28,800 bph), 25 jewels\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eFunctions: Day (English\/Kanji) \u0026amp; date, hacking seconds, quickset\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eCase: Stainless steel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eDiameter: approx. 36 mm without crown, 37.5 mm with crown\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eLug width: 18 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eCrystal: New, scratch-free acrylic\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eDial: Champagne sunburst with applied indices and GS logo\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eStrap: New black leather strap\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin-top: 0; margin-bottom: 0; vertical-align: middle;\"\u003e\u003cspan style=\"font-family: Calibri; font-size: 11.0pt;\"\u003eNo box or papers\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 0in; margin-left: .375in; font-family: Calibri; font-size: 11.0pt;\"\u003e \u003c\/p\u003e\n\u003cp style=\"margin: 0in; font-family: Calibri; font-size: 11.0pt;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eCondition:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0in; font-family: Calibri; font-size: 11.0pt;\"\u003eThe watch has been freshly serviced, with a newly replaced balance wheel ensuring excellent performance and timekeeping. All functions operate flawlessly. The dial is in very nice condition, with clean sunburst finish and intact applied markers. The case shows signs of wear consistent with age but remains in very presentable shape. New acrylic crystal and leather strap complete the overall elegant appearance.\u003c\/p\u003e","brand":"SpecialTimer","offers":[{"title":"Default Title","offer_id":52740758700362,"sku":null,"price":325000.0,"currency_code":"HUF","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/0694\/7658\/files\/specialtimer_grandseiko_5646-7001_3.jpg?v=1757249150","url":"https:\/\/specialtimer.com\/en-hu\/products\/seiko-grand-seiko-5646-7010-1971","provider":"SpecialTimer","version":"1.0","type":"link"}