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.

Prospex Sea

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 specsCrystal & Dial
2 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
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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