Side by side
Sheffield 1AvsSpinnaker Bradner 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
1A40mm
Bradner GMT42mm
Power Reserve
1A—
Bradner GMT40h
Water Resistance
1A200m
Bradner GMT180m
MSRP
1A$223
Bradner GMT$299
Full specifications
Case
7 specsCategory
Diver
GMT
Diameter
40mm
42mm
Thickness
12.8mm
15mm
Lug-to-Lug
46mm
50mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
180m
Crystal & Dial
2 specsDial Color
White/Blue
Brown
Lume
Swiss blue lume
None
Movement
2 specsCaliber
Seiko NH35A
Seiko NH34A
Power Reserve
—
40h
Pricing
1 specsMSRP
$223
$299
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