Side by side
Sheffield 1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no datevsSpinnaker Dumas GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date40mm
Dumas GMT44mm
Power Reserve
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date—
Dumas GMT40h
Water Resistance
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date200m
Dumas GMT300m
MSRP
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date$238
Dumas GMT$399
Full specifications
Case
7 specsCategory
Diver
GMT
Diameter
40mm
44mm
Thickness
12.8mm
15mm
Lug-to-Lug
46mm
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m
Crystal & Dial
2 specsDial Color
White/Blue
Blue
Lume
Swiss blue lume
None
Movement
2 specsCaliber
Seiko NH35A
Seiko NH34A
Power Reserve
—
40h
Pricing
1 specsMSRP
$238
$399
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