Side by side

Phoibos LeviathanvsSeiko 5 Sports SKX series

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

Leviathan
PhoibosLeviathan
MSRP $399
5 Sports SKX series
Seiko5 Sports SKX series
MSRP $315

At a glance

12 of 29 specs differ
Diameter
Leviathan40mm
5 Sports SKX series28mm
Power Reserve
Leviathan40h
5 Sports SKX series40h
Water Resistance
Leviathan200m
5 Sports SKX series100m
MSRP
Leviathan$399
5 Sports SKX series$315

Full specifications

Case

6 specs
Category
Diver
Sport
Diameter
40mm
28mm
Thickness
13mm
11.2mm
Lug-to-Lug
48mm
33.1mm
Lug Width
20mm
14mm
Water Resistance
200m
100m

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
AR Coating
Yes
Inner
Lume
Super-LumiNova
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
SII NH35
2R06
Jewels
25
21

Pricing

1 specs
MSRP
$399
$315

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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 5 Sports SKX series

Owners widely praise the Seiko 5 Sports SKX series for its iconic dive watch design, robust build, and excellent value, with many appreciating its timeless styling and tool-like character. The movement, while basic, is noted as offering hacking and hand-winding capabilities, and accuracy varies, with many owners reporting +/-5 to 10 seconds per day despite the movement's potential for +/-40 seconds. Some owners find the original SKX models heavier and bulkier than newer iterations, while others critique the lack of a screw-down crown and ISO rating on the newer Seiko 5 Sports SKX series, deeming it less of a serious tool watch. Overall, owners rate the Seiko 5 Sports SKX series highly for its enduring design and value proposition as a robust, everyday watch.

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