Side by side

Jack Mason Strat-o-timer GMTvsHelgray Poseidon Diver (Automatic)

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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Strat-o-timer GMT
Jack MasonStrat-o-timer GMT
MSRP $1,149
Poseidon Diver (Automatic)
HelgrayPoseidon Diver (Automatic)
MSRP $249
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At a glance

10 of 29 specs differ
Diameter
Strat-o-timer GMT42mm
Poseidon Diver (Automatic)40mm
Power Reserve
Strat-o-timer GMT40h
Poseidon Diver (Automatic)40h
Water Resistance
Strat-o-timer GMT200m
Poseidon Diver (Automatic)300m
MSRP
Strat-o-timer GMT$1,149
Poseidon Diver (Automatic)$249

Full specifications

Case

7 specs
Category
—
Diver
Diameter
42mm
40mm
Thickness
13.2mm
12mm
Lug-to-Lug
49mm
46mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
—
Black

Movement

1 specs
Caliber
Miyota 9075
NH35 Warranty

Pricing

1 specs
MSRP
$1,149
$249
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Jack Mason Strat-o-timer GMTvsHelgray Poseidon Diver (Automatic)Duckworth Prestex Rivington GMT AutomaticvsHelgray Poseidon Diver (Automatic)Duckworth Prestex Rivington GMT Special EditionvsHelgray Poseidon Diver (Automatic)Nadir Vespera GMTvsHelgray Poseidon Diver (Automatic)Jack Mason Strat-o-timer GMTvsGalo Super200 Dark EditionJack Mason Strat-o-timer GMTvsVaer D5 Tropic Auto
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