Side by side

Serica Ref. 5303 Diving ChronometervsChristopher Ward C1 Moonphase 40

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
C1 Moonphase 40
Christopher WardC1 Moonphase 40
MSRP $2,850

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
C1 Moonphase 4040mm
Power Reserve
Ref. 5303 Diving Chronometer42h
C1 Moonphase 4038h
Water Resistance
Ref. 5303 Diving Chronometer300m
C1 Moonphase 4030m
MSRP
Ref. 5303 Diving Chronometer$1,768
C1 Moonphase 40$2,850

Full specifications

Case

5 specs
Category
Diver
Diameter
39mm
40mm
Thickness
12.2mm
13.3mm
Lug-to-Lug
46.5mm
47.9mm
Water Resistance
300m
30m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Blue
Lume
Super-LumiNova
SLN X1 WL C1

Movement

5 specs
Caliber
M100 COSC
SW220-1
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
38h
Jewels
25
26
Complications
COSC
Moonphase

Pricing

1 specs
MSRP
$1,768
$2,850

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Christopher Ward C1 Moonphase 40

Owners widely praise the Christopher Ward C1 Moonphase 40 for its stunning aventurine dial and prominent, lumed moon, with one owner calling it a 10/10 for moon display. However, the lack of dial indices and lumed hands makes time-telling difficult, and the seconds hand is considered largely meaningless for precise tracking. Accuracy averages +2.3 seconds per day with a 38-hour power reserve. On balance, owners view the Christopher Ward C1 Moonphase 40 as a showpiece dress watch for occasional wear, rather than a tool for precise timekeeping, due to its striking dial and moon complication.

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