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Seiko Diver’s Watch—also presented as The Birth of Seiko Professional Diver’s Watch—is a collector-focused history of Seiko’s professional divers, from the 62MAS to later mechanical models. The 178-page Japanese/English book combines interviews with Seiko designers and engineers, expedition photographs, technical drawings, movement information and model comparisons. It is a specialist reference rather than a general survey of Seiko watches.
What the book covers
Published in May 2021, the book traces Seiko diver-watch development beginning with the 62MAS and continuing through models including the 6309, 2205 and 4S15. Fratello’s 2021 review also describes coverage of the 6215-7000 and 6159-7010, placing the early 62MAS in the context of later professional divers. The reference entry from Plus9Time lists the book at 178 pages and 29.7 × 21.0 cm, in Japanese and English.
Its historical scope also includes Japanese Antarctic expedition watches, 62MAS examples marked Daini Seikosha, and the Silver Wave mark, according to Plus9Time’s reference entry.
What makes it useful to collectors
Interviews and development history
Plus9Time lists interviews with Seiko engineers and designers including Taro Tanaka, Akio Nishizawa, Hideaki Uchiyama, Yasutaka Taruzawa, Tasuku Nakazawa, Gen Mitamura and Nobuhiro Kosugi. Fratello’s review reproduces a recollection attributed to Tanaka about the 6217’s hurried development: “The 6217 was a product that we put together hurriedly in order to meet the delivery date without knowing what a diver’s watch was at that time.” The line is Tanaka’s recollection as quoted in the book and reproduced by reviewer Tomas Rosputinsky; it is not an independently verified transcript.
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Photographs and technical reference material
Fratello describes photographs from Antarctic research expeditions alongside technical drawings, movement specification sheets and model-comparison tables. It also notes original part numbers for components such as crowns and crystals. Those details make the book potentially valuable when comparing generations or investigating parts and design changes, beyond its narrative history.
Antarctic context and early model details
Fratello’s 2021 review says Seiko donated 48 watches for the 1966 JARE-8 mission, and reports that the 62MAS had to withstand temperatures down to −50°C. These are figures reported by the reviewer, not figures established here from an official Seiko release. The Seiko Guy’s 62MAS historical guide distinguishes the 6217-8000 and 6217-8001 versions: the first had a smaller crown, replaced in the later version by a larger one that was easier to operate, including with gloves. The guide also says the improved version later accompanied JARE-8.
Fratello describes the 6159-7010 as rated to 600m. Separately, The Seiko Guy relays a 150m water-resistance figure for the 62MAS from a contemporary 1965 magazine account; that secondary guide is not a substitute for the original advertisement. Treat both figures as source-attributed historical details rather than independently verified official specifications.
First and second editions
Plus9Time announced a second edition in September 2021 and reported that the content remained the same, with slight formatting and English-translation updates. The physical differences it identified were the removal of the dust cover, bronze rather than gold lettering on the front, and a note on the final page identifying the second edition. Its second-edition announcement is useful when checking a copy’s edition.
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- WATER-RESISTANT: these water-resistant men's dive watches are ISO scuba-approved to depths of 200 meters
- SOLAR & AUTOMATIC: this men's automatic wrist watch is powered by any light source, with no battery change required for a 10-month power reserve
- STAINLESS STEEL: features a durable stainless steel watch case and bracelet with vibrant blue uni-directional bezel
- LUMIBRITE DISPLAY: this men's automatic watch features a highly-legible display with LumiBrite hands and markers
- V147 CALIBER: equipped with the reliable V147 caliber solar movement, these precise men’s watches ensure the most accurate automatic timekeeping
Fratello reported that the original private project was printed in a limited quantity of 300 copies. When the reviewer checked in 2021, roughly 50 copies were still available directly from Ryugo for 10,500 yen. Those are historical figures, not current stock or price information.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is it worth tracking down?
For a collector interested specifically in Seiko professional-diver history, the combination of interviews, expedition material, model comparisons and component-level reference details gives the book a clear niche. It is less suited to someone seeking a broad introduction to the entire Seiko catalogue. When comparing copies, check the edition, whether the listing is for a physical or digital format, language and translation details, condition, seller reliability, and confirmed price and stock.
Rank #4
- PADI SPECIAL EDITION: Men's Prospex Sea diver watch features PADI Special Edition details and a durable stainless-steel case.
- AUTOMATIC MOVEMENT: Seiko 4R35 automatic movement with manual winding, 23 jewels, stop-second function, date display, and approximately 41-hour power reserve.
- 200M DIVER'S WATCH: 200m/660ft diver's water resistance, screw-down crown, and screw case back support underwater use.
- SAPPHIRE CRYSTAL: Sapphire crystal with magnifier and inner anti-reflective coating provides enhanced clarity and scratch resistance.
- CERAMIC BEZEL & SILICONE BAND: Stainless-steel bezel with ceramic display and unidirectional rotation pairs with a flexible silicone band.
Present-day availability, current price and the editions or formats now on sale have not been independently established. A forum discussion refers to a Japanese-edition Kindle-shop listing and to a member’s report that the print version had sold out, but this is an anecdotal, dated marketplace signal rather than confirmation of current availability. See the Uhrforum discussion only as historical context; confirm any listing directly with its seller.
Quick Recap
Best Value
- PADI SPECIAL EDITION: Men's Prospex Sea diver featuring a PADI Special Edition design with a stainless-steel case and ceramic bezel display.
- AUTOMATIC MOVEMENT: Seiko 4R36 automatic movement offers manual winding, 24 jewels, day/date display, stop-second function, and approximately 41 hours of power reserve.
- 200M DIVER'S WATER RESISTANCE: Rated to 200 meters / 660 feet for diving, with a screw-down crown and screw case back.
- SAPPHIRE CRYSTAL: Sapphire crystal with magnifier and inner anti-reflective coating provides durable dial protection and improved readability.
- DIVER-READY FEATURES: 45mm stainless-steel case, unidirectional rotating bezel, LumiBrite hands, indexes and bezel, plus a secure three-fold clasp with extender.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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