Which is cheaper, the Grand Seiko SBGA384 or the Yema Navygraf Marine Nationale Quartz?

At MSRP the Yema Navygraf Marine Nationale Quartz is the cheaper of the two at $499, against $29,500 for the Grand Seiko SBGA384 — a $29,001 gap before any retailer discounting.

Which is bigger, the Grand Seiko SBGA384 or the Yema Navygraf Marine Nationale Quartz?

The Grand Seiko SBGA384 wears larger at 40mm versus 39mm for the Yema Navygraf Marine Nationale Quartz — a 1mm difference across the dial.

Which has a longer power reserve, the Grand Seiko SBGA384 or the Yema Navygraf Marine Nationale Quartz?

The Grand Seiko SBGA384 carries a 72-hour power reserve against 40 hours on the Yema Navygraf Marine Nationale Quartz.

What movement does the Grand Seiko SBGA384 run compared to the Yema Navygraf Marine Nationale Quartz?

The Grand Seiko SBGA384 runs a spring drive caliber (9R15), while the Yema Navygraf Marine Nationale Quartz runs a quartz.

Side by side

Grand Seiko SBGA384vsYema Navygraf Marine Nationale Quartz

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

Grand Seiko SBGA384

sbga384g

MSRP $29,500

Yema Navygraf Marine Nationale Quartz

yema-navygraf-marine-nationale-quartz-ymhfmn39

MSRP $499

At a glance

11 of 29 specs differ

Diameter

SBGA38440mm

Navygraf Marine Nationale Quartz39mm

Power Reserve

SBGA38472h

Navygraf Marine Nationale Quartz40h

Water Resistance

SBGA384100m

Navygraf Marine Nationale Quartz100m

MSRP

SBGA384$29,500

Navygraf Marine Nationale Quartz$499

Full specifications

Case

5 specs

Crystal & Dial

2 specs

AR Coating

Yes

Inner

Dial Color

Black

Standard

Movement

3 specs

Caliber

9R15

—

Type

Spring Drive

Quartz

Power Reserve

72h

40h

Pricing

1 specs

MSRP

$29,500

$499

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