Side by side

Bremont Altitude 39 DatevsJack 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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Altitude 39 Date
BremontAltitude 39 Date
MSRP $4,250
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

10 of 29 specs differ
Diameter
Altitude 39 Date39mm
Strat-o-timer GMT40mm
Power Reserve
Altitude 39 Date40h
Strat-o-timer GMT42h
Water Resistance
Altitude 39 Date100m
Strat-o-timer GMT200m
MSRP
Altitude 39 Date$4,250
Strat-o-timer GMT$1,099

Full specifications

Case

6 specs
Category
Pilot
—
Diameter
39mm
40mm
Thickness
11.19mm
13.2mm
Lug-to-Lug
—
47mm
Material
316L Stainless Steel (DLC coated)
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

1 specs
Dial Color
Silver
—

Movement

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

Pricing

1 specs
MSRP
$4,250
$1,099
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