Side by side

Phoibos LeviathanvsSeiko Prospex LX line

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Leviathan
PhoibosLeviathan
MSRP $399
Prospex LX line
SeikoProspex LX line
MSRP $5,500

At a glance

13 of 29 specs differ
Diameter
Leviathan40mm
Prospex LX line44.8mm
Power Reserve
Leviathan40h
Prospex LX line72h
Water Resistance
Leviathan200m
Prospex LX line200m
MSRP
Leviathan$399
Prospex LX line$5,500

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
40mm
44.8mm
Thickness
13mm
14.7mm
Lug-to-Lug
48mm
50.9mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium

Crystal & Dial

2 specs
AR Coating
Yes
Super-clear coating
Lume
Super-LumiNova
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
SII NH35
5R66
Type
Automatic
Spring Drive
Power Reserve
40h
72h
Jewels
25
30

Pricing

1 specs
MSRP
$399
$5,500

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Phoibos Leviathan

Owners widely praise the Phoibos Leviathan for its excellent value, superb case finishing, and generous lume. The watch is described as visually striking, legible, and well-made, with a unique case design, sapphire crystal, and a comfortable FKM strap or excellent bracelet with a milled clasp and quick adjustments. Some owners note the bezel's staggered jimping can cause fingers to slip, and the beveled crystal can distort the view of indices. Accuracy varies, with one owner reporting losing 5-10 seconds per day without a winder, while others state it keeps accurate time out of the box. The watch is frequently described as heavy and thick, with some owners finding it too large for wrists smaller than 7.5 inches, although newer models feature an improved clasp for better comfort and functionality. Overall, owners rate the Phoibos Leviathan highly for its striking design and impressive finishing at an accessible price point.

Seiko Prospex LX line

Owners widely report the dial's blue-green sunburst is phenomenal, and the sapphire glass features blue AR coating. Some owners feel the high price limits discounts and sales, with one AD noting extremely low sales due to the cost. One owner reported DLC peeling off a two-week-old watch, and another noted quality control issues like bezel inserts and fallen second hands. On balance, owners consider the Seiko Prospex LX line a nicely built watch, though pricing led to poor sales and its discontinuation.

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