{"product_id":"seiko-prospex-sea-gmt-60th-anniversary-limited-edition-spb509","title":"Seiko Prospex Sea GMT 60th Anniversary Limited Edition SPB509","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong data-start=\"81\" data-end=\"152\"\u003eSeiko Prospex 1968 Heritage Diver’s GMT “60th Anniversary” (SPB509)\u003c\/strong\u003e\u003cbr data-start=\"152\" data-end=\"155\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eMarking sixty years since Seiko’s pioneering dive watch debut, the SPB509 reinterprets the iconic 1968 high‑beat diver with modern innovations. Limited to 6,000 pieces and bearing a unique serial number on the caseback, this rugged timepiece features a 42 mm stainless steel case with super‑hard coating, a deep‑blue dial with an embossed wave pattern inspired by classic “wave mark” symbolism, and a ceramic‑insert unidirectional bezel. Equipped with the automatic Calibre 6R54 offering 72‑hour power reserve and independent GMT functionality, it’s water‑resistant to 300 m and fitted with a three‑fold secure clasp with slide adjuster for comfort—an ideal blend of heritage, utility, and craftsmanship.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eInformation:\u003c\/p\u003e\n\u003cp\u003eNew: Seiko Prospex Sea GMT 60th Anniversary Limited Edition SPB509\u003c\/p\u003e\n\u003cp\u003eReference: SPB509\u003c\/p\u003e\n\u003cp\u003eMSRP: $1,750\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eLimited: 6000 Pieces\u003c\/p\u003e\n\u003cp\u003eBezel Aligns\u003c\/p\u003e\n\u003cp\u003eStrap: Stainless Steel Bracelet\u003c\/p\u003e\n\u003cp\u003eCase Size: 42mm x 13.3mm Thickness 48.6mm Lug to Lug\u003c\/p\u003e\n\u003cp\u003eLug Width: 20mm\u003c\/p\u003e\n\u003cp\u003eCase Metal: Stainless Steel\u003c\/p\u003e\n\u003cp\u003eMovement: 6R54 - Automatic\u003c\/p\u003e\n\u003cp\u003eFunctions: Hours, minutes, seconds, date, GMT\u003c\/p\u003e\n\u003cp\u003eBox and Papers: Box and Papers\u003c\/p\u003e\n\u003cp\u003eCrystal: Sapphire\u003c\/p\u003e\n\u003cp\u003eBracelet size: 7.5”\u003c\/p\u003e\n\u003cp\u003eCondition: New\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHistory of Seiko Watches\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eSeiko's history began in 1881 when Kintaro Hattori opened a watch shop in Tokyo. In 1892, he established Seikosha, a factory for producing wall clocks. The company quickly progressed, creating Japan's first wristwatch, the Laurel, in 1913. Despite setbacks like the Great Kanto Earthquake of 1923, Seiko persevered, launching its first watch under the Seiko brand name in 1924. \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe post-World War II era saw Seiko's rapid growth and innovation. They introduced Japan's first automatic wristwatch in 1956 and launched the prestigious Grand Seiko line in 1960. Seiko achieved international recognition for accuracy in 1968, winning a Geneva Observatory competition.  \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe company made a name for its divers in 1965 with the introduction of their first professional dive watch, the 62MAS. This was followed by the iconic 6159-7001 in 1968, which was water-resistant to 300 meters. Seiko gained international recognition in 1975 with the release of the 6159-7010, nicknamed the \"Tuna Can\" due to its distinctive case shape. In 1969, they revolutionized the industry with the Astron, the world's first quartz wristwatch, ushering a new era of watchmaking that would send waves across the industry through the 70s and 80s. From its humble beginnings to becoming a global watchmaking giant, Seiko's history is characterized by resilience, technological advancement, and a commitment to precision.\u003c\/em\u003e\u003c\/p\u003e","brand":"Pre-Owned","offers":[{"title":"Default Title","offer_id":46837916532956,"sku":"250655","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/0214\/4926\/files\/SeikoProspexSeaGMT60thAnniversaryLimitedEditionSPB509.jpg?v=1755793340","url":"https:\/\/blacklistwatchestrendy.com\/products\/seiko-prospex-sea-gmt-60th-anniversary-limited-edition-spb509","provider":"Belmont Watches","version":"1.0","type":"link"}