Side by side
Seiko Prospex Marinemaster Marinemaster 1965 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
12 of 29 specs differDiameter
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch39.5mm
OLD BAY Timepiece40mm
Power Reserve
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch45h
OLD BAY Timepiece41h
Water Resistance
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch200m
OLD BAY Timepiece200m
MSRP
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch$2,800
OLD BAY Timepiece$550
Full specifications
Case
4 specsCategory
Diver
—
Diameter
39.5mm
40mm
Thickness
12.3mm
13.2mm
Lug-to-Lug
47.2mm
46mm
Crystal & Dial
4 specsCrystal Shape
Box
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
6L37
Seiko NH38
Power Reserve
45h
41h
Jewels
26
25
Pricing
1 specsMSRP
$2,800
$550
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