Seiko
Seiko watch reviews and guides
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Seiko Prospex Wrist Size Guide: Which Diver Fits Your Wrist?
Every Seiko Prospex diver in the current lineup wears differently on the wrist — not because of case diameter alone, but because of how each reference sits when you account for its lug-to-lug span, its thickness off the wrist, and whether the lugs curve in toward your skin or extend away from it. The 40mm…
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Seiko Prospex History in 9 References: From Japan’s First Diver to the Watches You Can Buy Now
Seiko Prospex spans three categories of tool watch — diver, field and aviator — across more than six decades of uninterrupted production. It has references for $350 and references for $3,500. Some of its icons were worn into the jungle by Marlon Brando; others went to the ocean floor on saturation divers. The brand name…
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What Does a Seiko Prospex Cost to Own? Service Intervals, Parts and the 10-Year Bill
How much does a Seiko Prospex really cost to own over ten years? Complete guide to service intervals, SCA authorized pricing for 4R35, 6R35 and 6R55, parts and bracelet costs, insurance, and a full 10-year cost-of-ownership table.
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Do Seiko Watches Hold Their Value?
Seiko watch value retention depends almost entirely on the model. Entry-level Seiko 5 Sports lose 40–60% immediately; discontinued Prospex like the SKX007 have tripled in price. Here is the complete data-backed breakdown.
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Seiko Prospex SPB451J1 Review: The Blue 1965 Heritage Diver Done Right
Seiko’s blue 1965 Heritage Diver now carries a 72-hour movement, 300 metres of water resistance, and a sunburst dial that earns the name — all for $1,300. Singapore, October 2024 — The SPB451J1 is the variant within Seiko’s 2024 “1965 Diver” trio that most buyers reach for first: the blue one, with the matching blue…
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Seiko Prospex SPB317J1 vs SPB519J1 (2026): 1970 Diver or 1968 GMT Heritage — Which Should You Buy?
The SPB317J1 is a $900 MIJ cushion-case diver. The SPB519J1 is a $1,700 MIJ GMT diver. Both are heritage Seiko Prospex J1-tier. Here is which to buy.
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Seiko Prospex Sumo Buying Guide (2026): Classic SPB101/SPB103 and King Sumo Compared
The Seiko Prospex Sumo earns its nickname. Seiko has never officially called this watch a Sumo — the company lists it as the Prospex Diver Automatic 200m — but the wide, rounded case, thick bezel, and broad dial make the resemblance to the sport’s silhouette unmistakable. Since the original SBDC001 debuted in 2007, the Sumo…
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Seiko Prospex SPB519J1 Review (2026): The 1968 Heritage GMT Diver — Is $1,700 Worth It?
A detailed review of the Seiko Prospex SPB519J1, the 1968 Heritage Diver GMT released in June 2025. Full specs, wrist experience, Calibre 6R54 movement analysis, and comparison against Longines, Oris, and TAG Heuer GMT divers at $1,700.
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Seiko History: From 1881 to the Watches You Can Buy Today, in 12 References
From Kintaro Hattori’s 1881 clock shop to Japan’s first wristwatch, the world’s first quartz watch, and today’s most compelling diver and dress watch buys — Seiko’s 140-year story told through 12 pivotal references.
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Seiko Prospex SPB317J1 Review (2026): The Made-in-Japan 1970 Diver — Is $900 the Right Price?
The Seiko Prospex SPB317J1 is the definitive Made-in-Japan interpretation of the legendary 1970 cushion-case diver: 41 mm of stainless steel, a curved sapphire crystal, the Cal. 6R35 automatic with a 70-hour power reserve, and a full ISO 6425 200 m diver’s rating — all for an official US retail price of $900. Review · October 2026 · Prices and…