Seiko Prospex SeavsZelos Hammerhead 43 Field Br

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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

Zelos Hammerhead 43 Field Br at true scale

Hammerhead 43 Field Br

Diameter

43.8mm

43mm

Lug-to-Lug

48.7mm

48mm

lowest

Thickness

12.8mm

lowest

13mm

Water Resistance

200m

300m

highest

Power Reserve

41h

n/a

MSRP

$625

$499

lowest

Movement

Seiko 4R35

Seiko NH38

Case

5 specs
Diameter
43.8mm
43mm
Thickness
12.8mm
13mm
Lug-to-Lug
48.7mm
48mm
Material
Stainless Steel
Bronze
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 4R35
Seiko NH38
Power Reserve
41h
0h
Jewels
23
0

Pricing

1 specs
MSRP
$625
$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 praised for its excellent value as a sport watch, with owners highlighting its comfortable wearability and generous lume. Reviewers note its solid build quality and attractive design, with some specifically mentioning the matte black dial as a strong point. One owner reports accuracy around +1 to +2 seconds per day. The 43.8mm case size is considered substantial by some, and one owner found the watch heavy and thick, regretting not choosing a different variant. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its blend of classic design and modern utility at an accessible price point.

Zelos Hammerhead 43 Field Br

The Zelos Hammerhead 43 Field Br is widely praised for its exceptional value and impressive finishing for the price, with owners calling it a "banger" and a rugged beater watch. Reviewers note its 1970s diver-inspired case and highly visible dial, with one owner stating the 43mm case feels smaller than its dimensions suggest due to its 47mm lug-to-lug. Some owners find the date wheel difficult to read and the bezel action could be smoother, with one reviewer mentioning a stiff 60-click bezel on a similar model. Overall, owners and reviewers rate the Zelos Hammerhead 43 Field Br highly for its build quality and value proposition.