Side by side
Dryden Heartlander AutomaticvsJack Mason Strat-o-timer GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Heartlander Automatic38mm
Strat-o-timer GMT40mm
Power Reserve
Heartlander Automatic40h
Strat-o-timer GMT42h
Water Resistance
Heartlander Automatic101m
Strat-o-timer GMT200m
MSRP
Heartlander Automatic$600
Strat-o-timer GMT$1,099
Full specifications
Case
5 specsCategory
Field
—
Diameter
38mm
40mm
Thickness
11.2mm
13.2mm
Lug-to-Lug
46mm
47mm
Water Resistance
101m
200m
Crystal & Dial
2 specsCrystal
Domed Sapphire
Sapphire
Dial Color
Goldfinch
—
Movement
2 specsCaliber
Miyota 9039
Miyota 9075
Power Reserve
40h
42h
Pricing
1 specsMSRP
$600
$1,099
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