Side by side
Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's WatchvsTSAO Baltimore OLD BAY Timepiece
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
OLD BAY Timepiece40mm
Power Reserve
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch50h
OLD BAY Timepiece41h
Water Resistance
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
OLD BAY Timepiece200m
MSRP
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$2,900
OLD BAY Timepiece$550
Full specifications
Case
5 specsCategory
Diver
—
Diameter
42.6mm
40mm
Thickness
13.4mm
13.2mm
Lug-to-Lug
49.3mm
46mm
Water Resistance
300m
200m
Crystal & Dial
4 specsCrystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
—
Lume
LumiBrite on hands, index(es) and bezel
None
Movement
3 specsCaliber
8L35
Seiko NH38
Power Reserve
50h
41h
Jewels
26
25
Pricing
1 specsMSRP
$2,900
$550
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