Side by side

Serica Ref. 5303 Diving ChronometervsChristopher Ward C63 Sealander Rocks

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
C63 Sealander Rocks
Christopher WardC63 Sealander Rocks
MSRP $1,405

At a glance

16 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
C63 Sealander Rocks42.87mm
Power Reserve
Ref. 5303 Diving Chronometer42h
C63 Sealander Rocks38h
Water Resistance
Ref. 5303 Diving Chronometer300m
C63 Sealander Rocks150m
MSRP
Ref. 5303 Diving Chronometer$1,768
C63 Sealander Rocks$1,405

Full specifications

Case

7 specs
Category
Diver
Diameter
39mm
42.87mm
Thickness
12.2mm
11.05mm
Lug-to-Lug
46.5mm
42.87mm
Finish
Brushed and polished
Brushed + Polished + Sandblasted
Water Resistance
300m
150m
Caseback
Solid
Display

Crystal & Dial

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

Movement

5 specs
Caliber
M100 COSC
SW200
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
38h
Jewels
25
26
Complications
COSC
Moonphase, Day-date

Pricing

1 specs
MSRP
$1,768
$1,405

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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 C63 Sealander Rocks

The Christopher Ward C63 Sealander Rocks is praised for its exceptional wearability and versatile design, with its 36mm case noted as fitting well on smaller wrists. Owners highlight the unique gloss dial and refined indices as particularly special, contributing to a quality that exceeds its price point. One owner reported the crown movement was less smooth than higher-end options, and the Sellita SW200 movement's rotor can be a bit loud. The Consort bracelet is noted as lighter and more conforming than the Bader, though some prefer the Bader for robustness. On balance, owners and reviewers rate the Christopher Ward C63 Sealander Rocks highly for its comfortable wearability and refined dial aesthetics at its price.

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