Side by side
Jack Mason Strat-o-timer GMTvsGrand Seiko SLGA015
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
Strat-o-timer GMT40mm
SLGA01543.8mm
Power Reserve
Strat-o-timer GMT42h
SLGA015120h
Water Resistance
Strat-o-timer GMT200m
SLGA015200m
MSRP
Strat-o-timer GMT$1,099
SLGA015$12,600
Full specifications
Case
6 specsCategory
—
Diver
Diameter
40mm
43.8mm
Thickness
13.2mm
13.8mm
Lug-to-Lug
47mm
51.5mm
Lug Width
20mm
23mm
Material
Stainless Steel
Titanium
Crystal & Dial
2 specsAR Coating
Inner
Yes
Dial Color
—
Black
Movement
3 specsCaliber
Miyota 9075
9RA5
Type
Automatic
Spring Drive
Power Reserve
42h
120h
Pricing
1 specsMSRP
$1,099
$12,600
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