Phoibos LeviathanvsRolex Deepsea
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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

Deepsea
Diameter
45mm
44mm
Lug-to-Lug
54mm
n/a
Thickness
15.5mm
n/a
Water Resistance
500m
3900m
highest
Power Reserve
n/a
70h
MSRP
$309
lowest
$15,550
Movement
Seiko NH35
3235
Case
7 specsCrystal & Dial
5 specsMovement
7 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 Rolex Deepsea is widely seen as a substantial, well-built watch with impressive engineering. Owners and reviewers note its robust compression architecture and the caliber 3235 movement, certified to Rolex's stringent -2/+2 seconds per day standard. Some find the watch exceptionally comfortable on a Rubber B strap, while others appreciate its heft and balance on the bracelet. However, its large size and thickness are polarizing, with some finding it too big and heavy for smaller wrists or as a daily wearer, and a few consider it a showpiece rather than a practical tool unless one is a serious diver. Overall, owners and reviewers rate the Rolex Deepsea highly for its impressive engineering and robust build, despite its polarizing size and thickness.
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