Side by side
Jack Mason Strat-o-timer GMTvsUndone Aero Worldtimer "Doolittle"
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
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At a glance
10 of 29 specs differDiameter
Strat-o-timer GMT42mm
Aero Worldtimer "Doolittle"40mm
Power Reserve
Strat-o-timer GMT42h
Aero Worldtimer "Doolittle"—
Water Resistance
Strat-o-timer GMT200m
Aero Worldtimer "Doolittle"100m
MSRP
Strat-o-timer GMT$1,149
Aero Worldtimer "Doolittle"$399
Full specifications
Case
6 specsDiameter
42mm
40mm
Thickness
13.2mm
15mm
Lug-to-Lug
49mm
0mm
Lug Width
22mm
0mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m
Crystal & Dial
1 specsCrystal
Sapphire
—
Movement
2 specsCaliber
Miyota 9075
Seiko NH35
Power Reserve
42h
—
Pricing
1 specsMSRP
$1,149
$399
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