Seiko Prospex SeavsWaltham Field & Marine Dual Time

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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

Waltham Field & Marine Dual Time at true scale

Field & Marine Dual Time

Diameter

43.8mm

43mm

Lug-to-Lug

48.7mm

n/a

Thickness

12.8mm

n/a

Water Resistance

200m

305m

highest

Power Reserve

41h

42h

highest

MSRP

$625

lowest

$4,095

Movement

Seiko 4R35

Soprod C115

Case

4 specs
Diameter
43.8mm
43mm
Thickness
12.8mm
n/a
Lug-to-Lug
48.7mm
n/a
Water Resistance
200m
305m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 4R35
Soprod C115
Power Reserve
41h
42h
Jewels
23
0

Pricing

1 specs
MSRP
$625
$4,095
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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.

Waltham Field & Marine Dual Time

The Waltham Field & Marine Dual Time is widely praised for its value and the practical, well-executed dual-time complication with a 24-hour sub-dial. Owners appreciate its bold 43mm size and unique bayonet crown system, which is noted as a rare and interesting feature, though some find it requires adjustment. The Soprod C115 automatic movement powers the watch, and its comfortable case back and smooth bezel contribute to a field watch feel despite its prominent crown. Reviewers point out that dial proportions and date legibility could be improved, and the lume is considered somewhat weak for a field watch. The Dual Time model is priced at 1,280 CHF. Overall, owners and reviewers rate the Waltham Field & Marine Dual Time highly for its unique features and value proposition.

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