Side by side
Jack Mason Strat-o-timer GMTvsSeestern S446 GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Strat-o-timer GMT40mm
S446 GMT39.5mm
Power Reserve
Strat-o-timer GMT42h
S446 GMT41hh
Water Resistance
Strat-o-timer GMT200m
S446 GMT100m
MSRP
Strat-o-timer GMT$1,099
S446 GMT$299
Full specifications
Case
6 specsCategory
—
GMT
Diameter
40mm
39.5mm
Thickness
13.2mm
13mm
Lug-to-Lug
47mm
47mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m
Crystal & Dial
2 specsCrystal Shape
Flat
Domed
Dial Color
—
Cream
Movement
5 specsCaliber
Miyota 9075
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
42h
41hh
Jewels
25
24
Complications
None
GMT, Date
Pricing
1 specsMSRP
$1,099
$299
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