Side by side
Sheffield 1A 38vsSpinnaker Dumas Automatic
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
9 of 29 specs differDiameter
1A 3838mm
Dumas Automatic44mm
Power Reserve
1A 38—
Dumas Automatic40h
Water Resistance
1A 38200m
Dumas Automatic300m
MSRP
1A 38$238
Dumas Automatic$239
Full specifications
Case
6 specsDiameter
38mm
44mm
Thickness
12.8mm
15mm
Lug-to-Lug
46mm
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m
Movement
2 specsCaliber
Seiko NH35
SII NH35A
Power Reserve
—
40h
Pricing
1 specsMSRP
$238
$239
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