Video · youtube.com
Hands on Review: Seiko Prospex SPB349 Cave Diver US Special Edition! A Great Starter Titanium Piece
Found in a YouTube search for reviews, demonstrations, comparisons, or discussions of this article's topic.
McGruff It
Seiko’s motorsport-inspired mechanical chronographs look like vintage instruments
McGruff's findings
Executive assessment
The article’s central design and movement claims hold up, but its purchase context needs a U.S. update: Seiko lists both references on its U.S. site at $2,500 and $2,400, with store-locator links rather than a guarantee of local stock. A try-on is worthwhile because the shared case is 42 mm wide and 14.6 mm thick, and a hands-on reviewer found it substantial on the wrist. Sources: seikowatches.com ; seikowatches.com ; fratellowatches.com . ([seikowatches.com](seikowatches.com))
Key discoveries
- The blue, bracelet-equipped chronograph is HBD001J1. Seiko specifies an automatic 8R48, approximately 45 hours of power reserve, a tachymeter, sapphire crystal and 10-bar water resistance. ([seikowatches.com](https://www.seikowatches.com/us-en/products/prospex/hbd001j1?utm_source=openai))
- The grey HBD002J1 shares the 8R48 and case dimensions but comes on cow leather; its U.S. list price is $100 lower than the HBD001’s. ([seikowatches.com](https://www.seikowatches.com/us-en/products/prospex/hbd002j1?utm_source=openai))
- A hands-on reviewer reports defined pusher clicks and comfortable bracelet wear, while cautioning that the chronographs feel substantial on a 18.5 cm wrist. Those are reviewer impressions, not a fit guarantee. ([fratellowatches.com](https://www.fratellowatches.com/seiko-expands-the-speedtimer-collection-with-four-new-references/?utm_source=openai))
Practical takeaways
- Compare HBD001J1’s blue dial and steel bracelet against HBD002J1’s grey dial, blue counters and leather strap—not just blue versus grey dial color. ([seikowatches.com](https://www.seikowatches.com/us-en/products/prospex/hbd001j1?utm_source=openai))
- Use Seiko’s U.S. listings—$2,500 and $2,400—as the relevant list-price starting point, then check a retailer for actual stock. ([seikowatches.com](https://www.seikowatches.com/us-en/products/prospex/hbd001j1?utm_source=openai))
- Try either watch on before deciding: both measure 42.0 mm across, 49.5 mm lug-to-lug and 14.6 mm thick. ([seikowatches.com](https://www.seikowatches.com/us-en/products/prospex/hbd001j1?utm_source=openai))
Conflicting evidence
- T3’s September 1 article converts the U.K. prices to roughly $3,050–$3,170, but those are not U.S. list prices. Seiko’s U.S. product pages list $2,500 for the blue HBD001 and $2,400 for the grey HBD002. ([t3.com](https://www.t3.com/luxury/watches/seiko-expands-prospex-family-with-stunning-new-grand-touring-collection))
- Calling the HBD002’s dial uniformly silver-grey misses a visible design distinction: its chronograph counters are light blue. Fratello’s hands-on account describes the grey dial, blue counters and grey leather strap. ([fratellowatches.com](https://www.fratellowatches.com/seiko-expands-the-speedtimer-collection-with-four-new-references/?utm_source=openai))
- Taste differs on the grey strap. T3’s writer prefers the restrained grey watch; Fratello’s hands-on reviewer likes both dials but would rather have the HBD002 on a bracelet or different strap. ([t3.com](https://www.t3.com/luxury/watches/seiko-expands-prospex-family-with-stunning-new-grand-touring-collection))
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Review · fratellowatches.com
Seiko Expands The Speedtimer Collection With Four New References
First-person impressions of both chronographs, including dial details, pusher feel and wrist presence.
The most useful found source for deciding whether to try both watches on.
Original Sources & Documentation
Documentation · seikowatches.com
HBD001J1
Official U.S. specifications and list price for the sky-blue chronograph.
Check the bracelet model’s dimensions, movement and $2,500 U.S. listing.
Documentation · seikowatches.com
HBD002J1
Official U.S. specifications and list price for the grey, leather-strap chronograph.
Check the strap model’s specifications and $2,400 U.S. listing.
Reporting · t3.com
Seiko expands Prospex family with stunning new Grand Touring collection
The article underlying this dossier, including U.K. launch prices and the writer’s preference for grey.
Preserves the original design argument while allowing its price conversion to be checked.