{"id":19380,"date":"2025-11-03T17:00:00","date_gmt":"2025-11-03T16:00:00","guid":{"rendered":"https:\/\/www.my-watchsite.com\/blog\/?p=19380"},"modified":"2025-11-04T11:16:37","modified_gmt":"2025-11-04T10:16:37","slug":"seikos-first-diving-watch-plunges-headfirst-into-its-60th-year","status":"publish","type":"post","link":"https:\/\/www.my-watchsite.com\/blog\/seikos-first-diving-watch-plunges-headfirst-into-its-60th-year\/","title":{"rendered":"Seiko\u2019s first diving watch plunges headfirst into its 60th year"},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"SEIKO PROSPEX PLONG\u00c9E : 60 ans et pas une ride !\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/hR3D-4Gelyo?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Prospex Marinemaster Professional: no bellyflop on sight<\/strong><\/h2>\n\n\n\n<p>As the centrepiece of this trilogy, the new Marinemaster is powered by the mechanical Caliber 8L45, the pinnacle of Seiko\u2019s know-how. This movement incorporates Spron, an exclusive alloy developed to resist shocks, corrosion and wear, even under the most extreme conditions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.my-watchsite.fr\/blog\/wp-content\/uploads\/2025\/10\/seiko1.jpg\" alt=\"\" class=\"wp-image-44464\" style=\"aspect-ratio:0.6206896551724138;width:600px;height:auto\" \/><figcaption class=\"wp-element-caption\">The limited edition Prospex Marinemaster Professional for the 60<sup>th<\/sup> anniversary.<\/figcaption><\/figure>\n\n\n\n<p>With its thinner and longer mainspring, it offers a power reserve of 72 hours and provides a +10\/-5 seconds per day accuracy, thus making it one of the most precise mechanical movements currently sold by the company. The model\u2019s design revisits the aesthetic codes of the 1968 diving watch while introducing 1975 technical innovations. The textured dial, whose pattern evokes oceanic depths \u2013 called <em>shinkai<\/em> \u2013 underwent a unique molding process: the indices are directly integrated to the dial\u2019s base, providing optimal shock-resistance.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.my-watchsite.fr\/blog\/wp-content\/uploads\/2025\/10\/seiko3.jpg\" alt=\"\" class=\"wp-image-44465\" \/><figcaption class=\"wp-element-caption\">The screwed-in case back is engraved with a wave symbolising Prospex watches\u2019 renowned reliability.<\/figcaption><\/figure>\n\n\n\n<p>A thick layer of lustrous transparent lacquer adds a dramatic depth to the piece. Besides, the one-piece titanium case ensures the watch to be water-resistant up to 600 meters, making it the perfect accessory for saturation diving sessions. It is also equipped with an L-shaped gasket that prevents any helium infiltration \u2013 a technical feat that spares the addition of a helium release valve. The stainless-steel bezel was treated with a DLC (Diamond-Like Carbon) coating that enhances its scratch-resistance.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.my-watchsite.fr\/blog\/wp-content\/uploads\/2025\/10\/seiko2.jpg\" alt=\"\" class=\"wp-image-44466\" \/><figcaption class=\"wp-element-caption\">The dial displays a blue shade that gets darker around the edges, evoking a beautiful underwater scenery.<\/figcaption><\/figure>\n\n\n\n<p><strong>Limited edition of 600 copies &#8211; \u20ac4,900<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/www.my-watchsite.com\/prospex\/9332-seiko-prospex-marinemaster-professional-seiko-diver-s-watch-60th-anniversary-limited-edition.html\" target=\"_blank\" rel=\"noreferrer noopener\">See the technical specification sheet of the Seiko Prospex Marinemaster Professional 60<sup>th<\/sup> Anniversary Limited Edition<\/a><\/p>\n\n\n\n<figure class=\"wp-block-pullquote has-border-color has-text-color has-medium-font-size\" style=\"border-color:#0d61aa;border-width:4px;color:#0d61aa\"><blockquote><p><strong>Supporting JAMSTEC\u2019s Arctic Research<\/strong><br><strong><br><\/strong>By supporting the research team of JAMSTEC (the Japan Agency for Marine-Earth Science and Technology), Seiko Prospex actively contributes to ocean conservation projects. This watch is planned to join JAMSTEC\u2019s Arctic Research programme in 2025.<br>Seiko and JAMSTEC share a remarkable history of innovation and resilience. In 1983, two professional diving watches water-resistant to 600 meters were successfully tested on the Shinkai 2000 research submersible operated by JAMSTEC. In 2014, it was the turn of two saturation diver\u2019s watches water-resistant to 1,000 meters to be mounted on the Kaiko 7000 II, demonstrating exceptional performances by functioning perfectly at depths exceeding 3,000 meters \u2013 thus surpassing their guaranteed specifications.<\/p><\/blockquote><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Two new Prospex models that celebrate their aquatic heritage<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.my-watchsite.fr\/blog\/wp-content\/uploads\/2025\/10\/seiko6.jpg\" alt=\"\" class=\"wp-image-44470\" \/><figcaption class=\"wp-element-caption\"><strong>Prospex 1965 Heritage Diver\u2019s Watch 60<sup>th<\/sup> Anniversary Limited Edition<\/strong>.<\/figcaption><\/figure>\n\n\n\n<p>To expand this anniversary collection, Seiko presents two other new Prospex models, with a signature dial pattern that evokes waves &#8211; symbolising Prospex watches\u2019 renowned reliability. This motif is also engraved on the case back of the Prospex diving watches. The silver edition is a tribute to the 1965 watch while the deep blue tint of the other edition is a nod to the 1968 model.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.my-watchsite.fr\/blog\/wp-content\/uploads\/2025\/10\/seiko-1965.jpg\" alt=\"\" class=\"wp-image-44471\" \/><figcaption class=\"wp-element-caption\"><br>The original 1965 diving watch.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-pullquote has-border-color has-primary-border-color has-text-color has-medium-font-size\" style=\"border-width:4px;color:#0d61aa\"><blockquote><p><br>Connoisseurs know it as the 62MAS \u2013 the 1965 diving watch was equipped with a self-winding mechanical movement and was water-resistant up to 150 meters. Designed to guarantee optimal reliability and legibility under the most extreme conditions, its sturdiness was amply demonstrated during the 1960s, when it was used in Antarctica, thus paving the way for the development of future emblematic models.<\/p><\/blockquote><\/figure>\n\n\n\n<p>The two editions are powered by 6R calibres renowned for their reliability. On the one hand, the silver edition embarks a 6R55 calibre, while the blue one encapsulates a 6R54 GMT calibre, whose GMT hand can be set independently to display a second time zone.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.my-watchsite.fr\/blog\/wp-content\/uploads\/2025\/10\/seiko5.jpg\" alt=\"\" class=\"wp-image-44468\" \/><figcaption class=\"wp-element-caption\"><strong>Prospex 1968 Heritage Diver\u2019s Watch 60<sup>th<\/sup> Anniversary Limited Edition<\/strong>.<\/figcaption><\/figure>\n\n\n\n<p>Besides, those two movements offer a power reserve of 72 hours and are water-resistant up to 300 meters \u2013 thus 100 more meters than the previous generations. The hands and the indices are coated in luminescent Lumibrite, alongside with a glowing marker on the unidirectional rotating bezel.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.my-watchsite.fr\/blog\/wp-content\/uploads\/2025\/10\/seiko-1968.jpg\" alt=\"\" class=\"wp-image-44469\" \/><figcaption class=\"wp-element-caption\"><br>The original 1968 diving watch.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-pullquote has-border-color has-text-color has-medium-font-size\" style=\"border-color:#0d61aa;border-width:4px;color:#0d61aa\"><blockquote><p><br>The release of the 1968 diving watch represented a revolution for professional divers: equipped with a high frequency self-winding movement nested in a one-piece stainless-steel case, it was water-resistant up to 300 meters. With its distinctive outline \u2013 a rotating bezel and a screwed-in crown located at 4 o\u2019clock \u2013 it established new standards in terms of divers\u2019 watchmaking innovation.<\/p><\/blockquote><\/figure>\n\n\n\n<p>The easy-to-adjust clasp is a great example of Seiko\u2019s ergonomics standards. Thanks to a lateral push-button mechanism, it allows a 15mm adjustment range extended or shortened in 2.5mm increments without needing any tool. This ensures a comfortable fit, even under deep-diving conditions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.my-watchsite.fr\/blog\/wp-content\/uploads\/2025\/10\/seiko-bracelet.jpg\" alt=\"\" class=\"wp-image-44482\" \/><figcaption class=\"wp-element-caption\">The new clasp allows a 15mm adjustment range of the bracelet.<\/figcaption><\/figure>\n\n\n\n<p>With these 3 anniversary watches, Seiko pays a tribute to their divers\u2019 watches heritage, while proving their ability to innovate.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.my-watchsite.com\/prospex\/9334-seiko-prospex-marinemaster-professional-seiko-diver-s-watch-60th-anniversary-limited-edition.html\" target=\"_blank\" rel=\"noreferrer noopener\">See the technical specification sheet of the Seiko Prospex 1965 Diver\u2019s Watch 60<sup>th<\/sup> Anniversary Limited Edition<\/a><strong> &#8211; \u20ac1,500<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/www.my-watchsite.com\/prospex\/9333-seiko-prospex-marinemaster-professional-seiko-diver-s-watch-60th-anniversary-limited-edition.html\" target=\"_blank\" rel=\"noreferrer noopener\">See the technical specification sheet of the Seiko Prospex 1968 Heritage Diver\u2019s GMT 60<sup>th<\/sup> Anniversary Limited Edition<\/a><strong> &#8211; \u20ac1,900<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/www.seikoboutique.eu\/fr\/en\/\" target=\"_blank\" rel=\"noreferrer noopener\">Seiko\u2019s website<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>See also:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"4 montres GMT pour partir en voyage !\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/JbChiSw8Pfc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Improvisation en mode plong\u00e9e et en...Corse !\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/cCBIHSJktYw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Une SEIKO test\u00e9e en live au Japon et la visite guid\u00e9e du mus\u00e9e... EXCEPTIONNEL !\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/COcF-VyUVQA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><strong>\u00c0 lire \u00e9galement :<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-mywatch-en wp-block-embed-mywatch-en\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"Ui7I9bOSCY\"><a href=\"https:\/\/www.my-watchsite.com\/blog\/diving-mode-activated-4-watches-to-pack-with-you-this-summer\/\">Diving mode activated: 4 watches to pack with you this summer<\/a><\/blockquote><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;Diving mode activated: 4 watches to pack with you this summer&#8221; &#8212; MyWatch EN\" src=\"https:\/\/www.my-watchsite.com\/blog\/diving-mode-activated-4-watches-to-pack-with-you-this-summer\/embed\/#?secret=sfGwlhduPZ#?secret=Ui7I9bOSCY\" data-secret=\"Ui7I9bOSCY\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1965 marks the beginning of Seiko\u2019s diving watches history, with the release of their first diver\u2019s watch. For 6 decades, the Japanese company has been pushing back the boundaries of performance to follow professional divers standards. Their successive innovations helped improving their watches\u2019 security, liability and legibility. This year, for the 60th anniversary of the collection, Seiko released 3 new Prospex models. For this occasion, Frank Sans C\u2019s crew didn\u2019t hesitate to roll up their sleeves and engage in proper testing. Marseilles, here they come!<\/p>\n","protected":false},"author":3,"featured_media":19392,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[695,70],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Seiko\u2019s first diving watch plunges headfirst into its 60th year - MyWatch EN<\/title>\n<meta name=\"description\" content=\"To celebrate the 60th anniversary of the collection, Seiko released 3 new Prospex models. 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No bellyflop on sight with these new innovations!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.my-watchsite.com\/blog\/seikos-first-diving-watch-plunges-headfirst-into-its-60th-year\/\" \/>\n<meta property=\"og:site_name\" content=\"MyWatch EN\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/MyWatchSite\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-03T16:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-04T10:16:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.my-watchsite.com\/blog\/wp-content\/uploads\/sites\/2\/2025\/10\/seiko-60th-year.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1563\" \/>\n\t<meta property=\"og:image:height\" content=\"969\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Chlo\u00e9 Redler\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@mywatchsite\" \/>\n<meta name=\"twitter:site\" content=\"@mywatchsite\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Chlo\u00e9 Redler\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.my-watchsite.com\/blog\/seikos-first-diving-watch-plunges-headfirst-into-its-60th-year\/\",\"url\":\"https:\/\/www.my-watchsite.com\/blog\/seikos-first-diving-watch-plunges-headfirst-into-its-60th-year\/\",\"name\":\"Seiko\u2019s first diving watch plunges headfirst into its 60th year - MyWatch EN\",\"isPartOf\":{\"@id\":\"https:\/\/www.my-watchsite.com\/blog\/#website\"},\"datePublished\":\"2025-11-03T16:00:00+00:00\",\"dateModified\":\"2025-11-04T10:16:37+00:00\",\"author\":{\"@id\":\"https:\/\/www.my-watchsite.com\/blog\/#\/schema\/person\/d0a71aaf376997c19bcc32876032e616\"},\"description\":\"To celebrate the 60th anniversary of the collection, Seiko released 3 new Prospex models. 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