Side by side

Phoibos LeviathanvsGrand Seiko SLGA009

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

Leviathan
PhoibosLeviathan
MSRP $399
SLGA009
Grand SeikoSLGA009
MSRP $9,800

At a glance

10 of 29 specs differ
Diameter
Leviathan40mm
SLGA00940mm
Power Reserve
Leviathan40h
SLGA009120h
Water Resistance
Leviathan200m
SLGA009100m
MSRP
Leviathan$399
SLGA009$9,800

Full specifications

Case

5 specs
Category
Diver
Dress
Thickness
13mm
11.8mm
Lug-to-Lug
48mm
47.9mm
Lug Width
20mm
22mm
Water Resistance
200m
100m

Crystal & Dial

1 specs
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
SII NH35
9RA2
Type
Automatic
Spring Drive
Power Reserve
40h
120h

Pricing

1 specs
MSRP
$399
$9,800

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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 SLGA009

The Grand Seiko SLGA009 "White Birch II" is praised for its Spring Drive Caliber 9RA2 movement, offering exceptional accuracy of ±0.5 seconds per day and a 120-hour power reserve. Reviewers highlight its refined dial texture, inspired by Shinshu forests, and the Series 9 design with a frost-finished movement. The watch features a 40mm stainless steel case and a power reserve indicator on the movement bridge. However, its price of $8,600 to $9,100 USD is noted as relatively expensive, reflecting Grand Seiko's increasing price points. Overall, reviewers consider the Grand Seiko SLGA009 a highly refined timepiece, with its advanced Spring Drive movement and aesthetic improvements being key strengths.

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