Seiko Prospex SeavsSignum Cuda

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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

Signum Cuda at true scale

Cuda

Diameter

42mm

42.5mm

Lug-to-Lug

48.6mm

48mm

lowest

Thickness

13.3mm

lowest

13.6mm

Water Resistance

300m

highest

200m

Power Reserve

72h

n/a

MSRP

n/a

$499

Movement

Seiko 6R54

Miyota 9015

Case

6 specs
Diameter
42mm
42.5mm
Thickness
13.3mm
13.6mm
Lug-to-Lug
48.6mm
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
Bronze
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
n/a
Dial Color
n/a
n/a
Lume
LumiBrite on hands, index(es) and bezel
SuperLuminova

Movement

3 specs
Caliber
Seiko 6R54
Miyota 9015
Power Reserve
72h
n/a
Jewels
24
0

Pricing

1 specs
MSRP
n/a
$499
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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.

Signum Cuda

Owners widely praise the Signum Cuda's distinctive dial options, particularly the Lapis Lazuli and thermally blued meteorite, noting how they play with light. The lume on the bezel and markers is also frequently highlighted as fantastic. However, multiple owners report that the lume on the hands significantly underperforms compared to the rest of the watch, rendering them unreadable in low light. One owner experienced condensation inside the watch despite the crown being screwed in, leading to concerns about build quality, while another owner stated their Cuda has been fine in water. The bezel action was initially stiff for one owner but improved after lubrication. The Signum Cuda is powered by a Miyota 9015 automatic movement and features 200m water resistance with a 42.5mm case. On balance, owners rate the Signum Cuda highly for its unique dial aesthetics and strong bezel/marker lume, despite consistent criticism regarding the hand lume performance.

From video reviewers

The fully lumed dial is a standout strength. The bracelet's perceived quality was not consistently addressed.