Side by side
Jack Mason Strat-o-timer GMTvsS.U.F Helsinki 180NN
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
8 of 29 specs differDiameter
Strat-o-timer GMT40mm
180NN38.7mm
Power Reserve
Strat-o-timer GMT42h
180NN42h
Water Resistance
Strat-o-timer GMT200m
180NN100m
MSRP
Strat-o-timer GMT$1,099
180NN$3,480
Full specifications
Case
5 specsDiameter
40mm
38.7mm
Thickness
13.2mm
9.4mm
Lug-to-Lug
47mm
46.4mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m
Crystal & Dial
1 specsDial Color
—
Black
Movement
1 specsCaliber
Miyota 9075
Soprod A10
Pricing
1 specsMSRP
$1,099
—
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