Side by side

Jack Mason Strat-o-timer GMTvsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition
SeikoProspex Sea 1970 Heritage Diver's Black Series Limited Edition
MSRP $3,300
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Buy used on eBay ↗
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At a glance

14 of 29 specs differ
Diameter
Strat-o-timer GMT42mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
Strat-o-timer GMT40h
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
Strat-o-timer GMT200m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
Strat-o-timer GMT$1,149
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

6 specs
Category
—
Diver
Diameter
42mm
44mm
Thickness
13.2mm
13mm
Lug-to-Lug
49mm
49.3mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9075
8L35
Power Reserve
40h
50h
Jewels
25
26

Pricing

1 specs
MSRP
$1,149
$3,300
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