Which is cheaper, the Grand Seiko STGK007 or the Yema Flygraf Bi-Compax French Air Force?

At MSRP the Yema Flygraf Bi-Compax French Air Force is the cheaper of the two at $490, against $6,200 for the Grand Seiko STGK007 — a $5,710 gap before any retailer discounting.

Which is bigger, the Grand Seiko STGK007 or the Yema Flygraf Bi-Compax French Air Force?

The Yema Flygraf Bi-Compax French Air Force wears larger at 40mm versus 27.8mm for the Grand Seiko STGK007 — a 12.2mm difference across the dial.

Which has a longer power reserve, the Grand Seiko STGK007 or the Yema Flygraf Bi-Compax French Air Force?

The Grand Seiko STGK007 carries a 50-hour power reserve against 40 hours on the Yema Flygraf Bi-Compax French Air Force.

What movement does the Grand Seiko STGK007 run compared to the Yema Flygraf Bi-Compax French Air Force?

The Grand Seiko STGK007 runs a automatic caliber (9S27), while the Yema Flygraf Bi-Compax French Air Force runs a quartz.

Side by side

Grand Seiko STGK007vsYema Flygraf Bi-Compax French Air Force

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

Grand Seiko STGK007

stgk007g

MSRP $6,200

Yema Flygraf Bi-Compax French Air Force

yema-flygraf-bi-compax-french-air-force-ymhf1582aa-gg

MSRP $490

At a glance

11 of 29 specs differ

Diameter

STGK00727.8mm

Flygraf Bi-Compax French Air Force40mm

Power Reserve

STGK00750h

Flygraf Bi-Compax French Air Force40h

Water Resistance

STGK007100m

Flygraf Bi-Compax French Air Force100m

MSRP

STGK007$6,200

Flygraf Bi-Compax French Air Force$490

Full specifications

Case

6 specs

Crystal & Dial

1 specs

AR Coating

Yes

Inner

Movement

3 specs

Caliber

9S27

—

Type

Automatic

Quartz

Power Reserve

50h

40h

Pricing

1 specs

MSRP

$6,200

$490

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