Which is cheaper, the Seiko 5 Sports Field series or the William Wood International Association of Fire?

At MSRP the Seiko 5 Sports Field series is the cheaper of the two at $315, against $820 for the William Wood International Association of Fire — a $505 gap before any retailer discounting.

Which is bigger, the Seiko 5 Sports Field series or the William Wood International Association of Fire?

The William Wood International Association of Fire wears larger at 41mm versus 39.4mm for the Seiko 5 Sports Field series — a 1.6mm difference across the dial.

Which has better water resistance, the Seiko 5 Sports Field series or the William Wood International Association of Fire?

The William Wood International Association of Fire is rated to 100m versus 10m for the Seiko 5 Sports Field series.

Which has a longer power reserve, the Seiko 5 Sports Field series or the William Wood International Association of Fire?

The Seiko 5 Sports Field series carries a 41-hour power reserve against 40 hours on the William Wood International Association of Fire.

What movement does the Seiko 5 Sports Field series run compared to the William Wood International Association of Fire?

Both watches run automatic movements — the Seiko 5 Sports Field series uses the 4R36 and the William Wood International Association of Fire uses the Seiko NH35.

Side by side

Seiko 5 Sports Field seriesvsWilliam Wood International Association of Fire

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

Seiko 5 Sports Field series

srpg27

MSRP $315

William Wood International Association of Fire

william-wood-iafc

MSRP $820

At a glance

13 of 29 specs differ

Diameter

5 Sports Field series39.4mm

International Association of Fire41mm

Power Reserve

5 Sports Field series41h

International Association of Fire40h

Water Resistance

5 Sports Field series100m

International Association of Fire100m

MSRP

5 Sports Field series$315

International Association of Fire$820

Full specifications

Case

5 specs

Crystal & Dial

4 specs

Crystal

Hardlex

Domed Sapphire

Crystal Shape

Curved

Flat

Dial Color

Black

Standard

Lume

LumiBrite on hands and index(es)

None

Movement

3 specs

Caliber

4R36

Seiko NH35

Power Reserve

41h

40h

Jewels

Pricing

1 specs

MSRP

$315

$820

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