Side by side

Sinn U18vsWilliam Wood International Association of Fire

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

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U18
SinnU18
MSRP $3,488
International Association of Fire
William WoodInternational Association of Fire
MSRP $820
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At a glance

16 of 29 specs differ
Diameter
U1844mm
International Association of Fire41mm
Power Reserve
U1842h
International Association of Fire40h
Water Resistance
U182,000m
International Association of Fire100m
MSRP
U18$3,488
International Association of Fire$820

Full specifications

Case

8 specs
Diameter
44mm
41mm
Thickness
15.5mm
15mm
Lug-to-Lug
—
49mm
Lug Width
22mm
20mm
Material
high-strength
316L Stainless Steel
Finish
—
Brushed and polished
Water Resistance
2000m
100m
Caseback
—
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
—
Flat
AR Coating
—
Inner
Dial Color
Black
Standard
Indices
—
Applied

Movement

2 specs
Caliber
SW300-1
Seiko NH35
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$3,488
$820
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