Side by side
Jack Mason Strat-o-timer GMTvsGruppo Gamma Field III 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
Strat-o-timer GMT42mm
Field III GMT40mm
Power Reserve
Strat-o-timer GMT40h
Field III GMT41h
Water Resistance
Strat-o-timer GMT200m
Field III GMT200m
MSRP
Strat-o-timer GMT$1,149
Field III GMT$459
Full specifications
Case
5 specsCategory
—
GMT
Diameter
42mm
40mm
Thickness
13.2mm
14mm
Lug-to-Lug
49mm
48.5mm
Material
316L Stainless Steel
Stainless Steel
Crystal & Dial
3 specsAR Coating
Inner
Yes
Dial Color
—
Black
Lume
None
Super-LumiNova
Movement
3 specsCaliber
Miyota 9075
Seiko Instruments NH38A
Power Reserve
40h
41h
Complications
None
GMT
Pricing
1 specsMSRP
$1,149
$459
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Jack Mason Strat-o-timer GMT vs Gruppo Gamma Field III GMT gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Jack Mason Strat-o-timer GMTvsGruppo Gamma Field III GMTDuckworth Prestex Rivington GMT AutomaticvsGruppo Gamma Field III GMTDuckworth Prestex Rivington GMT Special EditionvsGruppo Gamma Field III GMTNadir Vespera GMTvsGruppo Gamma Field III GMTJack Mason Strat-o-timer GMTvsGruppo Gamma Field III GMT DateChristopher Ward C63 Sealander Extreme GMTvsJack Mason Strat-o-timer GMT