Which is cheaper, the Nivada Grenchen Depthmaster 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 $1,050 for the Nivada Grenchen Depthmaster — a $230 gap before any retailer discounting.

Which is bigger, the Nivada Grenchen Depthmaster or the William Wood International Association of Fire?

The William Wood International Association of Fire wears larger at 41mm versus 39mm for the Nivada Grenchen Depthmaster — a 2mm difference across the dial.

Which has better water resistance, the Nivada Grenchen Depthmaster or the William Wood International Association of Fire?

The Nivada Grenchen Depthmaster is rated to 1000m versus 100m for the William Wood International Association of Fire.

Which has a longer power reserve, the Nivada Grenchen Depthmaster or the William Wood International Association of Fire?

The William Wood International Association of Fire carries a 40-hour power reserve against 38 hours on the Nivada Grenchen Depthmaster.

What movement does the Nivada Grenchen Depthmaster run compared to the William Wood International Association of Fire?

Both watches run automatic movements — the Nivada Grenchen Depthmaster uses the Sellita SW200 and the William Wood International Association of Fire uses the Seiko NH35.

Side by side

Nivada Grenchen DepthmastervsWilliam Wood International Association of Fire

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

Nivada Grenchen Depthmaster

Depthmaster

MSRP $1,050

William Wood International Association of Fire

william-wood-iafc

MSRP $820

At a glance

13 of 29 specs differ

Diameter

Depthmaster39mm

International Association of Fire41mm

Power Reserve

Depthmaster38h

International Association of Fire40h

Water Resistance

Depthmaster1,000m

International Association of Fire100m

MSRP

Depthmaster$1,050

International Association of Fire$820

Full specifications

Case

6 specs

Diameter

39mm

41mm

Thickness

13mm

15mm

Lug-to-Lug

39mm

49mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

1000m

100m

Caseback

Stainless Steel 316

Solid

Crystal & Dial

3 specs

Crystal

Sapphire

Domed Sapphire

Dial Color

Black

Standard

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

Sellita SW200

Seiko NH35

Power Reserve

38h

40h

Complications

GMT

None

Pricing

1 specs

MSRP

$1,050

$820

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