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

43.5mm

43mm

Lug-to-Lug

51mm

50mm

lowest

Thickness

13.3mm

lowest

16.5mm

Water Resistance

200m

300m

highest

Power Reserve

70h

n/a

MSRP

$1,500

$445

lowest

Movement

Seiko 6R35

Seiko NH35

Case

5 specs
Diameter
43.5mm
43mm
Thickness
13.3mm
16.5mm
Lug-to-Lug
51mm
50mm
Material
Titanium
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 6R35
Seiko NH35
Power Reserve
70h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,500
$445
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Reviews

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

Seiko Prospex Sea

Owners praise the Seiko Prospex Sea for its value and classic design, with reviewers highlighting its impressive case finishing and excellent LumiBrite lume. One owner found the watch to be a great first proper timepiece, while another noted it felt uncomfortably large, thick, and heavy on a 6.5-inch wrist. The hard-coated steel case offers scratch resistance. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its value and finishing.

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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