Side by side
Serica Ref. 5303 Diving ChronometervsSheffield 1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date—
Water Resistance
Ref. 5303 Diving Chronometer300m
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date200m
MSRP
Ref. 5303 Diving Chronometer$1,768
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date$238
Full specifications
Case
4 specsDiameter
39mm
40mm
Thickness
12.2mm
12.8mm
Lug-to-Lug
46.5mm
46mm
Water Resistance
300m
200m
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
White/Blue
Lume
Super-LumiNova
Swiss blue lume
Movement
3 specsCaliber
M100 COSC
Seiko NH35A
Power Reserve
42h
—
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$238
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