Side by side

Jack Mason Strat-o-timer GMTvsGrand Seiko SBGM245

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
SBGM245
Grand SeikoSBGM245
MSRP $6,100
Buy from Jack Mason ↗
Buy used on eBay ↗
Buy from Grand Seiko ↗
Buy used on eBay ↗

At a glance

11 of 29 specs differ
Diameter
Strat-o-timer GMT42mm
SBGM24540.5mm
Power Reserve
Strat-o-timer GMT40h
SBGM24572h
Water Resistance
Strat-o-timer GMT200m
SBGM245200m
MSRP
Strat-o-timer GMT$1,149
SBGM245$6,100

Full specifications

Case

6 specs
Category
—
GMT
Diameter
42mm
40.5mm
Thickness
13.2mm
14.4mm
Lug-to-Lug
49mm
48.6mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
—
Black

Movement

2 specs
Caliber
Miyota 9075
9S66
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$1,149
$6,100
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Jack Mason Strat-o-timer GMTvsGrand Seiko SBGM245Duckworth Prestex Rivington GMT AutomaticvsGrand Seiko SBGM245Duckworth Prestex Rivington GMT Special EditionvsGrand Seiko SBGM245Nadir Vespera GMTvsGrand Seiko SBGM245Jack Mason Strat-o-timer GMTvsLorier Hyperion SIIJack Mason Strat-o-timer GMTvsLorier Hyperion SII Skyward
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