Side by side
Sheffield GMTvsSmiths Armstrong Siddeley
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
GMT40mm
Armstrong Siddeley42mm
Power Reserve
GMT—
Armstrong Siddeley—
Water Resistance
GMT200m
Armstrong Siddeley100m
MSRP
GMT—
Armstrong Siddeley$980
Full specifications
Case
6 specsCategory
GMT
—
Diameter
40mm
42mm
Thickness
13mm
12mm
Lug-to-Lug
48mm
52mm
Lug Width
20mm
22mm
Water Resistance
200m
100m
Crystal & Dial
1 specsDial Color
Blue
Cream
Movement
2 specsCaliber
Seiko NH34
Unitas 6498
Type
Automatic
Manual
Pricing
1 specsMSRP
—
$980
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