Seiko Prospex SeavsWhitby Watch Co. Ad Mare Diver
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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
Ad Mare Diver
Diameter
43.5mm
44mm
Lug-to-Lug
51mm
50.8mm
lowest
Thickness
13.3mm
lowest
14mm
Water Resistance
200m
200m
Power Reserve
70h
highest
38h
MSRP
$1,500
$550
lowest
Movement
Seiko 6R35
Sellita SW200-1
Case
4 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
Owners widely praise the Whitby Watch Co. Ad Mare Dive Watch as a solid dive watch for its price, with multiple users calling it the best deal under $600 and one rating it 8.5 out of 10. Reviewers note its substantial feel, quality construction, and crisp dial with applied indices, powered by a Sellita SW200-1 automatic movement. Some owners find the 44mm case size to be a comfortable daily wear, with one mentioning the sanded texture of the titanium variant keeps it light. Drawbacks noted by one owner include the absence of a date wheel. Overall, owners and reviewers rate the Whitby Watch Co. Ad Mare Dive Watch highly for its value and build quality at its price point.
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