Seiko Prospex SeavsSpinnaker 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.

Seiko Prospex Sea at true scale

Prospex Sea

Spinnaker Hass Automatic at true scale

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

n/a

$445

Movement

Seiko 6R54

Seiko NH35

Case

5 specs
Diameter
42mm
43mm
Thickness
13.3mm
16.5mm
Lug-to-Lug
48.6mm
50mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
n/a
Dial Color
n/a
Flying Dutchman
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
Seiko 6R54
Seiko NH35
Power Reserve
72h
0h
Jewels
24
0

Pricing

1 specs
MSRP
n/a
$445
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Seiko Prospex Sea

The Seiko Prospex Sea is widely recognized for its excellent value and solid build quality, with many owners appreciating its classic dive watch design and legible dial. Reviewers consistently praise its lume, with one owner noting it as excellent. The watch's finishing is also a frequent highlight, described as impressive and well-executed for its price point. Some owners find the 42mm case size wears well, even on smaller wrists, while others describe it as substantial and potentially uncomfortable for smaller wrists. The movement is noted as a 6R54 automatic. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its robust construction and classic dive watch aesthetics at a fair price.

Spinnaker Hass Automatic

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.

From video reviewers

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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