Side by side
Maystone Watch Co Prosperity GMTvsGruppo Gamma Field III GMT Date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
Prosperity GMT38mm
Field III GMT Date40mm
Power Reserve
Prosperity GMT41h
Field III GMT Date41h
Water Resistance
Prosperity GMT100m
Field III GMT Date200m
MSRP
Prosperity GMT$443
Field III GMT Date$459
Full specifications
Case
6 specsCategory
—
GMT
Diameter
38mm
40mm
Thickness
11.9mm
14mm
Lug-to-Lug
46mm
48.5mm
Lug Width
20mm
22mm
Water Resistance
100m
200m
Crystal & Dial
3 specsAR Coating
Inner
Yes
Dial Color
Red
Black
Lume
string
Super-LumiNova
Movement
2 specsCaliber
Seiko NH34
Seiko Instruments NH38A
Complications
None
GMT, Date
Pricing
1 specsMSRP
—
$459
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