{"product_id":"seiko-prospex-marinemaster-dark-water-1965-100th-anniversary-diver-s-watch-sje101j1","title":"Marinemaster 'Dark Water' 1965 100th Anniversary Diver’s Watch","description":"\u003cp\u003eCelebrating a century of Seiko branded watches, the SJE101J1 features a striking black “dark water” design inspired by two icons of Seiko’s diving heritage: the first Japanese Diver’s watch launched in 1965 and the professional Seiko Marinemaster of the 2000s. The original 1965 Diver marked the start of Seiko’s long-standing commitment to dependable dive watches and proved its resilience on extreme expeditions to Antarctica, the North and South Poles and Mount Everest. The Marinemaster continued this legacy, purpose-built for professional divers with a robust case and strong strap.\u003c\/p\u003e\n\u003cp\u003eThis latest Marinemaster reinterpretation incorporates key design cues from the 1965 original, including its recognisable silhouette and distinctive hour markers. The horizontal line patterned dial delivers a refined marine-sports aesthetic, while mirrored-finish lugs enhance light reflection. Thick Lumibrite-coated hour markers ensure excellent legibility, and a sapphire exhibition case back — a first for a Seiko Diver — showcases the movement inside. Despite its box sapphire glass and display back, this is the slimmest Seiko mechanical diver at just 12.3mm.\u003c\/p\u003e\n\u003cp\u003eAt its heart, the SJE101J1 is powered by the new slim in-house calibre 6L37, offering strong accuracy of -10 to +15 seconds per day and a 45-hour power reserve. Meeting Seiko’s strict ISO Diving standards, this timepiece embodies the Prospex philosophy of “Professional Specifications” — watches engineered to be practical, reliable and durable in extreme or everyday environments for sports lovers and adventure seekers alike.\u003c\/p\u003e","brand":"Seiko Prospex","offers":[{"title":"Default Title","offer_id":52590768587018,"sku":"SJE101J1","price":2990.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/5276\/5450\/files\/seiko-prospex-marinemaster-dark-water-1965-100th-anniversary-diver-s-watch-p47266-85956_image.jpg?v=1781652814","url":"https:\/\/www.francisandgaye.co.uk\/products\/seiko-prospex-marinemaster-dark-water-1965-100th-anniversary-diver-s-watch-sje101j1","provider":"Francis \u0026 Gaye","version":"1.0","type":"link"}