Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited EditionvsSpinnaker Hass Automatic
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition

Hass Automatic
Diameter
42mm
43mm
Lug-to-Lug
48.6mm
lowest
50mm
Thickness
13.3mm
lowest
16.5mm
Water Resistance
300m
300m
Power Reserve
72h
n/a
MSRP
$1,750
$445
lowest
Movement
Seiko 6R54
Seiko NH35
Case
5 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition is widely praised for its excellent quality and finishing for its price, with reviewers highlighting its beautiful case, bracelet, and Lumibrite lume. Owners appreciate the comfortable 42mm case size and the 4 o'clock crown position. The watch features a sapphire crystal and uses the in-house 6R54 automatic movement with a three-day power reserve. Some reviewers note that the GMT function is secondary and that the bezel clicks are quieter than expected. The 4:30 date window splits opinion among enthusiasts, and it is described as a "caller GMT" rather than a true "traveller GMT." Overall, owners and reviewers rate the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition highly for its excellent value, quality finishing, and comfortable wearability.
Owners widely praise the Spinnaker Hass Automatic for its quality and vibrant dial options at an accessible price point. The watch features a Seiko NH35 automatic movement and 300m water resistance. Some owners find Spinnaker watches, including the Hass Automatic, to be on the thicker side, with one user noting a previous model was considered comically large. One owner reported a quality issue with a different Spinnaker model where the crown detached. Overall, owners rate the Spinnaker Hass Automatic highly for its impressive build quality and fun aesthetic relative to its price.
The dial's recovered marine plastic construction with textured finish provides distinctive material differentiation at the entry-level dive watch price point, and the sapphire crystal with anti-reflective coating ensures strong on-wrist legibility. The 300m water resistance and automatic movement deliver capable specifications, though bracelet quality and fit remain underspecified across reviews.
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