Side by side
Serica Ref. 5303 Diving ChronometervsSheffield 1A 40mm
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
1A 40mm40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
1A 40mm40h
Water Resistance
Ref. 5303 Diving Chronometer300m
1A 40mm200m
MSRP
Ref. 5303 Diving Chronometer$1,768
1A 40mm$228
Full specifications
Case
5 specsCategory
Diver
—
Diameter
39mm
40mm
Thickness
12.2mm
13mm
Lug-to-Lug
46.5mm
48mm
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 NH35
Power Reserve
42h
40h
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$228
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