{"product_id":"seiko-prospex-marine-master-mm300","title":"Seiko Prospex MarineMaster 'MM300' Diver's Automatic Blue Ocean Dial Silver Stainless Steel Men's Watch SLA023J1","description":"\u003cdiv id=\"ProductName\" class=\"cssWrapper620 cssMarginBottom10\"\u003e\u003cdiv id=\"ProdNameDiv\" class=\"ProdHalfWidthField CNEditPanel\"\u003e\n\u003ch2 id=\"ProdName\"\u003e\u003cstrong\u003eSeiko Prospex Marine Master 'MM300' Diver's Automatic Blue Ocean Dial Silver Stainless Steel Mens Watch SLA023J1\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\u003cdiv\u003eSince Seiko made its first diving watch in 1965, Seiko has been exceeding the expectations of those whose sports require watches with professional specifications. Drawing from Seiko's roots, a 'Sumo' series has become popular among Seiko fanatics. Sumo wrestling is the national sport of Japan. Once patronized by the emperors, Sumo's origins go back at least 1,500 years, making it the world's oldest organized sport. The piece is so named due to its thick case style resembling that of a wrestler.\u003c\/div\u003e\u003c\/div\u003e\n\u003ch3\u003eStyle:\u003c\/h3\u003e\n\u003cdiv\u003eThis Seiko Prospex Marine Master 'MM300' SLA023J1 takes inspiration from the very watch which unlocked the deep, the Rolex Submariner. Silver indexes and hands compliment a blue dial reminscent of the ocean.\u003c\/div\u003e\n\u003cdiv\u003e\u003ch3\u003eFunctions:\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv\u003eBoth the indexes and hands are coated in a luminous material to provide clear visibility at depths of the ocean. Moreover, the ever present Seiko logo can be seen at 12 with a date window at 3. Then, a silver stainless steel case with a blue bezel ontop surround the dial to provide it with protection and class. Then, a silver stainless steel bracelet fastens using a fold over clasp. A 8L35 caliber automatic movement giving you a 50 hour power reserve.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThis watch has a water resistance of 300 metres, making it suitable for diving.\u003c\/div\u003e\n\u003ch3\u003eMade In Japan:\u003c\/h3\u003e\n\u003cdiv\u003e\u003cp\u003eFirstly, for all you Seiko enthusiasts, this premium timepiece has been made in Japan, indicated by the suffix ‘J’. Seiko watches made in Japan are hard to obtain outside of Japan due to the highest quality of craftsmanship and astonishing features that come in each individual timepiece. We have a range of Japanese watches here at Watchnation but in limited quantities, so if you are looking to add to your collection then this is the perfect place for you.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e8L35 Caliber\u003c\/td\u003e\n\u003ctd\u003eAuto + Manual Winding\u003c\/td\u003e\n\u003ctd\u003e+15 to -10 Seconds Per Day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50 Hour Power Reserve\u003c\/td\u003e\n\u003ctd\u003eStainless Steel Case\u003c\/td\u003e\n\u003ctd\u003eCeramic Bezel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSapphire Crystal\u003c\/td\u003e\n\u003ctd\u003eAnti Reflective Coating\u003c\/td\u003e\n\u003ctd\u003eLumbrite Hands \u0026amp; Indexes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 Fold Clasp \u0026amp; Lock\u003c\/td\u003e\n\u003ctd\u003e 300m Water Resistance\u003c\/td\u003e\n\u003ctd\u003e One Piece Structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew-down Crown\u003c\/td\u003e\n\u003ctd\u003eUndirectional Rotating Bezel\u003c\/td\u003e\n\u003ctd\u003e26 Jewels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDate Display\u003c\/td\u003e\n\u003ctd\u003eStop Second Hand Function\u003c\/td\u003e\n\u003ctd\u003eFree Rubber Strap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003e \u003c\/h3\u003e\n\u003cdiv\u003e\n\u003ch3\u003eThe Prospex Story:\u003c\/h3\u003e\n\u003cp\u003eScuba-diving became increasingly popular around the 1960’s, an example of this was the formation of the Professional Association of Diving Instructors (PADI) in 1965. Moreover, diving equipment was becoming increasingly reliable, so more people began to dive recreationally. There was of course a crucial need for divers to be able to time their dives. Subsequently, the watch market responded to this necessity by flooding the market with reliable dive watches.\u003c\/p\u003e\n\u003cp\u003eIn 1965, Seiko first produced their original dive watch - the 6217. This was the very first Japanese dive watch and it paved the path for future divers that claim to meet Seiko’s Professional Specifications. The original 6217 was notably worn by the 8th Japanese Antarctic expedition. This model featured bidirectional rotating bezel, legible lumed hands, and an easy-to-grip crown.\u003c\/p\u003e\n\u003cp\u003eAlthough professional divers were still pining for a dive watch that had the capability of going deeper than 300 metres. The Seiko development team went about going to produce a watch which was capable of doing so. The year 1975 marks the release of the first Seiko Prospex, with the ability to be used in 600 metres of depth. The Prospex is the first diver watch to use a titanium case instead of standard steel. It was also the first to use a ceramic shroud for deep-sea diving and the first to use a hybrid analog digital watch with an alarm.\u003c\/p\u003e\n\u003cp\u003eAnother achievement for the Prospex family was the L-shape single crystal gasket, which prevented any helium escape valve unnessacary. This was one of the development teams first aims, to prevent a helium resistant watch. There were numerous other milestones that Seiko achieved with the Prospex. Such as in 1986 when Seiko produced a watch that was water resistant to 1000 metres.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eThe Brand: Seiko\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cp\u003eSeiko’s story began in 1881 with the opening of a shop in Tokyo, it’s owner was Kintaro Hattori. Eleven years after the opening of his shop, Hattori opened a clock factory in 1895 that they began to produce pocket watches. Soon followed by alarm clocks in 1899, and then table clocks in 1902. Then in 1913 Hattori began working on his first wristwatch. Then in 1924, the brand Seiko was born with the creation of the first Seiko wristwatch.\u003c\/p\u003e\n\u003cp\u003eSeiko established itself throughout the 20th century as being a force in the advancements that took place in the watching world. For example, Seiko were the producers of the first winding wristwatch made in Japan. Then in 1964, Seiko became the official timer for the Olympics. And then most notably Seiko unveiled the first quartz wristwatch, the Astron, in 1969. Marking the beginning of the quartz revolution. Or equally impressive the creation of the world’s first TV watch in 1982. And even more relevant today, with our abhorrent use of non-renewable energy sources, Seiko’s Kinetic. This watch had the ability to generate its own power from the movement of the wearer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003eIf you have any questions please \u003ca title=\"https:\/\/www.watchnation.com\/contact-us\/ Ctrl+Click or tap to follow the link\" href=\"https:\/\/www.watchnation.com\/contact-us\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eclick here\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eClick here to join our \u003ca href=\"https:\/\/www.facebook.com\/WatchNationUK\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003efacebook\u003c\/a\u003e and \u003ca href=\"https:\/\/www.instagram.com\/watchnationshop\/?hl=en\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eInstagram\u003c\/a\u003e!\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cdiv id=\"ProductDescription\" class=\"cssWrapper620 cssMarginBottom10\"\u003e \u003c\/div\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":51503870345557,"sku":"SLA023J1","price":17337.0,"currency_code":"RON","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/3720\/2517\/files\/150882930.jpg?v=1758524699","url":"https:\/\/www.watchnation.com\/en-ro\/products\/seiko-prospex-marine-master-mm300","provider":"WatchNation","version":"1.0","type":"link"}