Which is cheaper, the Grand Seiko SBGM221 or the William Wood International Association of Fire?

At MSRP the William Wood International Association of Fire is the cheaper of the two at $820, against $5,400 for the Grand Seiko SBGM221 — a $4,580 gap before any retailer discounting.

Which is bigger, the Grand Seiko SBGM221 or the William Wood International Association of Fire?

The William Wood International Association of Fire wears larger at 41mm versus 39.5mm for the Grand Seiko SBGM221 — a 1.5mm difference across the dial.

Which has better water resistance, the Grand Seiko SBGM221 or the William Wood International Association of Fire?

The William Wood International Association of Fire is rated to 100m versus 30m for the Grand Seiko SBGM221.

Which has a longer power reserve, the Grand Seiko SBGM221 or the William Wood International Association of Fire?

The Grand Seiko SBGM221 carries a 72-hour power reserve against 40 hours on the William Wood International Association of Fire.

What movement does the Grand Seiko SBGM221 run compared to the William Wood International Association of Fire?

Both watches run automatic movements — the Grand Seiko SBGM221 uses the 9S66 and the William Wood International Association of Fire uses the Seiko NH35.

Side by side

Grand Seiko SBGM221vsWilliam Wood International Association of Fire

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

Grand Seiko SBGM221

sbgm221g

MSRP $5,400

William Wood International Association of Fire

william-wood-iafc

MSRP $820

At a glance

13 of 29 specs differ

Diameter

SBGM22139.5mm

International Association of Fire41mm

Power Reserve

SBGM22172h

International Association of Fire40h

Water Resistance

SBGM22130m

International Association of Fire100m

MSRP

SBGM221$5,400

International Association of Fire$820

Full specifications

Case

7 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Domed Sapphire

AR Coating

Yes

Inner

Dial Color

Black

Standard

Movement

2 specs

Caliber

9S66

Seiko NH35

Power Reserve

72h

40h

Pricing

1 specs

MSRP

$5,400

$820

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