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Bremont Supermarine 300MvsJack Mason Strat-o-timer GMT

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

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Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Strat-o-timer GMT
Jack MasonStrat-o-timer GMT
MSRP $1,099
Buy from Bremont ↗
Buy used on eBay ↗
Buy from Jack Mason ↗
Buy used on eBay ↗

At a glance

9 of 29 specs differ
Diameter
Supermarine 300M40mm
Strat-o-timer GMT40mm
Power Reserve
Supermarine 300M40h
Strat-o-timer GMT42h
Water Resistance
Supermarine 300M300m
Strat-o-timer GMT200m
MSRP
Supermarine 300M$3,550
Strat-o-timer GMT$1,099

Full specifications

Case

5 specs
Category
Diver
—
Thickness
12mm
13.2mm
Lug-to-Lug
—
47mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Green
—

Movement

2 specs
Caliber
BE-92AE
Miyota 9075
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$3,550
$1,099
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