Side by side
Serica Ref. 5303 Diving ChronometervsAlkin Watches Model One
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
Model One42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Model One—
Water Resistance
Ref. 5303 Diving Chronometer300m
Model One100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Model One—
Full specifications
Case
6 specsCategory
Diver
—
Diameter
39mm
42mm
Thickness
12.2mm
13.25mm
Lug-to-Lug
46.5mm
50mm
Lug Width
20mm
22mm
Water Resistance
300m
100m
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
Green
Lume
Super-LumiNova
Super-LumiNova BGW9
Movement
3 specsCaliber
M100 COSC
Seiko NH35A
Power Reserve
42h
—
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
—
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