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 $1,350

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
C63 Sealander Rocks40mm
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$1,350

Full specifications

Case

5 specs
Category
Diver
Sport
Diameter
39mm
40mm
Thickness
12.2mm
11.05mm
Lug-to-Lug
46.5mm
42.87mm
Water Resistance
300m
150m

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
SW200-1
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
38h
Jewels
25
26
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$1,350

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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

Owners widely praise the Christopher Ward C63 Sealander Rocks for its excellent wearability, comfort, and build quality for the price, with many highlighting its refined dial and versatile design. The 36mm case is noted as wearing well on smaller wrists, and the robust bracelet offers on-the-fly adjustment. Some owners find the branding prominent or the dial too white, and one owner experienced difficulty adjusting the time on their 36mm model. The Sellita SW200-1 movement provides a 38-hour power reserve. On balance, owners and reviewers rate the Christopher Ward C63 Sealander Rocks highly for its exceptional wearability and refined dial at its price point.

From video reviewers

The dial finishing and unique stone dial options are strong points. The 36mm case size is a shared feature. Reviewers questioned its value proposition against other watches under $1,000.

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