Side by side

Serica Ref. 5303 Diving ChronometervsChristopher Ward C63 Sealander Automatic

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 Automatic
Christopher WardC63 Sealander Automatic
MSRP $1,430

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
C63 Sealander Automatic36mm
Power Reserve
Ref. 5303 Diving Chronometer42h
C63 Sealander Automatic65h
Water Resistance
Ref. 5303 Diving Chronometer300m
C63 Sealander Automatic150m
MSRP
Ref. 5303 Diving Chronometer$1,768
C63 Sealander Automatic$1,430

Full specifications

Case

5 specs
Category
Diver
Sport
Diameter
39mm
36mm
Thickness
12.2mm
10.6mm
Lug-to-Lug
46.5mm
42mm
Water Resistance
300m
150m

Crystal & Dial

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

Movement

5 specs
Caliber
M100 COSC
SW 200-2
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
65h
Jewels
25
26
Complications
COSC
Day-date, Date

Pricing

1 specs
MSRP
$1,768
$1,430

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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 Automatic

Owners widely praise the Christopher Ward C63 Sealander Automatic for its excellent finishing, on-the-fly micro-adjust bracelet, and GADA versatility, with some calling it their best offering and a bargain. However, the lume is consistently criticized as weak, particularly for its price point. Some owners find the dial's multiple color pops distracting, and one notes the brand's poor aftermarket value retention. On balance, owners rate the Christopher Ward C63 Sealander Automatic highly for its build quality and versatility at the price.

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