Side by side

Grand Seiko STGK031vsYema Navygraf Marine Nationale GMT Paris

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

STGK031
Grand SeikoSTGK031
MSRP $6,600
Navygraf Marine Nationale GMT Paris
YemaNavygraf Marine Nationale GMT Paris
MSRP $944

At a glance

10 of 29 specs differ
Diameter
STGK03130mm
Navygraf Marine Nationale GMT Paris39mm
Power Reserve
STGK03150h
Navygraf Marine Nationale GMT Paris40h
Water Resistance
STGK031100m
Navygraf Marine Nationale GMT Paris100m
MSRP
STGK031$6,600
Navygraf Marine Nationale GMT Paris$944

Full specifications

Case

5 specs
Category
Dress
GMT
Diameter
30mm
39mm
Thickness
10.5mm
Lug-to-Lug
36.2mm
Lug Width
15mm
20mm

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Paris

Movement

2 specs
Caliber
9S27
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$6,600
$944

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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.

Grand Seiko STGK031

Grand Seiko STGK031 owners widely praise its subtle, light pink dial that shifts to appear white or silver depending on lighting, its refined 30mm case size, and its simple elegance. Some find the 30mm sizing perfect for wearability, with one owner noting it is ideal for those who find 38mm watches too large. The Zaratsu polishing is also a noted strength. However, the Calibre 9S27 movement has a 50-hour power reserve and an accuracy range of +8 to -3 seconds per day, which some consider modest for the price. On balance, owners and reviewers rate the Grand Seiko STGK031 highly for its versatile dial and refined 30mm case.

From video reviewers

The 50-hour power reserve of the Calibre 9S27 movement is a shared strength. The 36mm lug-to-lug measurement is a weakness. Reviewers disagreed on the premium feel of the polished stainless steel case and bracelet compared to Zaratsu polishing.

Yema Navygraf Marine Nationale GMT Paris

Owners widely praise the Yema Navygraf Marine Nationale GMT Paris as a standout design within the brand's recent offerings and a compelling alternative to higher-priced models, with one owner reporting zero issues. The steel version is a 39mm tool watch with pencil-shaped hands and white indices for legibility. It features Yema's YEMA2000 movement, offering ±10 seconds per day accuracy and a 42-hour power reserve, with 300-meter water resistance. Overall, owners rate the Yema Navygraf Marine Nationale GMT Paris highly for its appealing design and solid performance at its price point.

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