Side by side

Phoibos LeviathanvsGrand Seiko SBGN027

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

Leviathan
PhoibosLeviathan
MSRP $399
SBGN027
Grand SeikoSBGN027
MSRP $3,700

At a glance

9 of 29 specs differ
Diameter
Leviathan40mm
SBGN02739mm
Power Reserve
Leviathan40h
SBGN02740h
Water Resistance
Leviathan200m
SBGN027200m
MSRP
Leviathan$399
SBGN027$3,700

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
13mm
12.3mm
Lug-to-Lug
48mm
45.9mm
Lug Width
20mm
19mm

Crystal & Dial

1 specs
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
SII NH35
9F86
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$399
$3,700

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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.

Grand Seiko SBGN027

Owners widely praise the Grand Seiko SBGN027 for its exceptional Zaratsu polishing, compact 39mm size, and versatile monochrome aesthetic, noting its thin profile and suitability as a grab-and-go watch. The 9F quartz movement delivers highly accurate timekeeping, with one owner reporting +/- 10 seconds per year. However, some find the lume limited, the bracelet lacks micro-adjustments, and the GMT hand can be easily mistaken for the minute hand. One owner reported a black index on the bezel disappearing after a couple of months. On balance, owners rate the Grand Seiko SBGN027 highly for its premium finishing and accurate HAQ GMT movement in a wearable size.

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