Side by side
Fortis Marinemaster M-40vsTSAO Baltimore OLD BAY Timepiece
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Marinemaster M-4040mm
OLD BAY Timepiece40mm
Power Reserve
Marinemaster M-4038h
OLD BAY Timepiece41h
Water Resistance
Marinemaster M-40300m
OLD BAY Timepiece200m
MSRP
Marinemaster M-40$3,520
OLD BAY Timepiece$550
Full specifications
Case
5 specsCategory
Diver
—
Thickness
13mm
13.2mm
Lug-to-Lug
—
46mm
Lug Width
21mm
20mm
Water Resistance
300m
200m
Crystal & Dial
1 specsDial Color
Orange
—
Movement
3 specsCaliber
Sellita SW220-1
Seiko NH38
Power Reserve
38h
41h
Jewels
26
25
Pricing
1 specsMSRP
$3,520
$550
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