Side by side
Jack Mason Strat-o-timer GMTvsTudor Black Bay GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
19 of 29 specs differDiameter
Strat-o-timer GMT42mm
Black Bay GMT41mm
Power Reserve
Strat-o-timer GMT40h
Black Bay GMT70h
Water Resistance
Strat-o-timer GMT200m
Black Bay GMT200m
MSRP
Strat-o-timer GMT$1,149
Black Bay GMT$5,275
Full specifications
Case
7 specsCategory
—
GMT
Diameter
42mm
41mm
Thickness
13.2mm
14.6mm
Lug-to-Lug
49mm
46mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Caseback
Solid
Solid screw-down
Crystal & Dial
4 specsCrystal Shape
Flat
—
AR Coating
Inner
—
Dial Color
—
Black
Indices
Applied
—
Movement
7 specsCaliber
Miyota 9075
MT5652
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
GMT
Pricing
1 specsMSRP
$1,149
$5,275
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