Phoibos LeviathanvsSeiko Prospex Sea Save the Ocean Special Edition
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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.
Leviathan
Prospex Sea Save the Ocean Special Edition
Diameter
45mm
43.8mm
Lug-to-Lug
54mm
48.7mm
lowest
Thickness
15.5mm
12.8mm
lowest
Water Resistance
500m
highest
200m
Power Reserve
n/a
41h
MSRP
$309
lowest
$650
Movement
Seiko NH35
Seiko 4R35
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.
The Phoibos Leviathan is noted for its sturdy, well-made construction and vintage aesthetic, offering a conservative design at an affordable price. Owners report the 45mm case feels heavy and thick at 15.5mm, with one owner replacing the stock band. The watch features a grey dial and blue lume. Overall, owners find the Phoibos Leviathan to be a well-built, vintage-inspired watch at an accessible price point.
The watch features 500m water resistance and a Seiko NH35 automatic movement. The case size is a point of contention, with reviewers noting it is substantial and may overwhelm smaller wrists, while others highlight a 40mm case size as an improvement.
The Seiko Prospex Sea Save the Ocean Special Edition is widely praised for its exceptional and beautiful dial designs, featuring wave patterns, gradient blues, and marine animal motifs that evoke the ocean, with many considering them among the best in their price range. Owners also note satisfactory lume, smooth bezel operation, and comfortable wearability, with some finding the 43.8mm case size and 13mm thickness to be well-balanced for daily wear. However, multiple sources criticize the bracelet clasp as flimsy, rattly, or underwhelming, and one owner reported returning the watch due to this. Some owners also note imperfect day/date wheel alignment as a common issue in this price segment. On balance, owners and reviewers rate the Seiko Prospex Sea Save the Ocean Special Edition highly for its stunning dial artistry and overall value.
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