Side by side
Serica Ref. 5303 Diving ChronometervsTSAO 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
Ref. 5303 Diving Chronometer39mm
OLD BAY Timepiece40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
OLD BAY Timepiece41h
Water Resistance
Ref. 5303 Diving Chronometer300m
OLD BAY Timepiece200m
MSRP
Ref. 5303 Diving Chronometer$1,768
OLD BAY Timepiece$550
Full specifications
Case
5 specsCategory
Diver
—
Diameter
39mm
40mm
Thickness
12.2mm
13.2mm
Lug-to-Lug
46.5mm
46mm
Water Resistance
300m
200m
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
—
Lume
Super-LumiNova
None
Movement
3 specsCaliber
M100 COSC
Seiko NH38
Power Reserve
42h
41h
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$550
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