SEIKO PROSPEX SPB545J1 1965 HERITAGE DIVER'S SAVE THE OCEAN LIMITED EDITION MEN WATCH

Seiko Prospex SPB545J1 — 1965 Heritage Diver's Save the Ocean Limited Edition

The Seiko Prospex SPB545J1 is one of only 4,000 pieces produced worldwide — a limited edition automatic diver's watch that traces its lineage directly to 1965, when Seiko created Japan's first diver's watch and set a new global benchmark for underwater instruments. Six decades on, the SPB545J1 honours that pioneering legacy while contributing to something larger: Seiko's Save the Ocean initiative, a mission to help protect the world's oceans for present and future generations — and for the divers who depend on them.

The vivid tranquil teal blue dial evokes the clarity of open water, with LumiBrite on the hands and indices ensuring readability in the darkest depths. The 40mm stainless steel case features a super-hard coating for durability, a unidirectional rotating bezel for safe dive timing, and a curved sapphire crystal for premium scratch resistance. At its heart lies the in-house 6R55 automatic calibre — a 72-hour power reserve movement with hand-winding capability and accuracy of +25/-15 seconds per day. Every SPB545J1 purchased is a direct contribution to the future of marine conservation.

Key Features

• Seiko 6R55 automatic movement with manual winding — self-winding with the convenience of hand-winding when needed
• Approx. 72-hour (3-day) power reserve — reliable performance through a long weekend without wearing
• Accuracy: +25/-15 seconds per day — dependable automatic timekeeping
• 200M Diver's water resistance — built to professional diving standards
• Unidirectional rotating bezel — purpose-built for safe and accurate dive timing
• Curved sapphire crystal — premium scratch resistance and superior optical clarity
• Tranquil teal blue dial — evokes the colour and clarity of the open ocean
• LumiBrite on hands and hour markers — superior legibility in low light and underwater conditions
• 40mm stainless steel case with super-hard coating — durable, corrosion-resistant, and sized for all-day wear
• 13.0mm case thickness — slim profile for a professional diver's specification
• Screw-down crown — water integrity protection for diving use
• Date display — everyday practicality built in
• Stainless steel bracelet — durable, comfortable, and corrosion-resistant
• Save the Ocean limited edition — 4,000 pieces worldwide, each contributing to Seiko's marine conservation mission

Why You'll Love It

The SPB545J1 is the Seiko Prospex for those who want a diver's watch with both heritage depth and genuine purpose. The 1965 lineage gives it an authenticity that modern dive watches cannot manufacture — this design traces directly to the watch that defined Japanese diving horology sixty years ago. The tranquil teal dial is among the most evocative in the current Prospex lineup, the 6R55 automatic with its 72-hour reserve is one of Seiko's most reliable movements, and the 200M water resistance means it is genuinely ready for the dive. But the detail that makes the SPB545J1 more than a great dive watch is the Save the Ocean connection — every piece purchased contributes to Seiko's mission to protect the oceans that make diving possible. With only 4,000 pieces worldwide, this is a watch worth owning for reasons that go beyond the dial.

About Seiko Prospex Save the Ocean

Seiko Prospex Save the Ocean is a long-running initiative dedicated to the protection of the world's marine environments. Through partnerships with ocean conservation organisations and a commitment to responsible watchmaking, Seiko uses the Prospex platform to raise awareness and contribute to the preservation of the oceans that inspire the collection. Every Save the Ocean limited edition watch is both a timepiece and a statement of intent — that precision instruments and environmental responsibility are not in conflict, but deeply connected. The SPB545J1 carries that mission on its teal dial, in its 1965 heritage design, and in every dive it accompanies.

Backed by Seiko's official warranty. Authentic Seiko Prospex Save the Ocean limited edition watch, sold by authorised retailer City Chain Singapore.

Explore the full Seiko Prospex Collection or browse all Seiko watches at City Chain Singapore.