Side by side

Serica Ref. 5303 Diving ChronometervsCWC 1980 RN Divers Automatic Re-Issue Watch

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
1980 RN Divers Automatic Re-Issue Watch
CWC1980 RN Divers Automatic Re-Issue Watch
MSRP $2,458

At a glance

9 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
1980 RN Divers Automatic Re-Issue Watch41mm
Power Reserve
Ref. 5303 Diving Chronometer42h
1980 RN Divers Automatic Re-Issue Watch40h
Water Resistance
Ref. 5303 Diving Chronometer300m
1980 RN Divers Automatic Re-Issue Watch300m
MSRP
Ref. 5303 Diving Chronometer$1,768
1980 RN Divers Automatic Re-Issue Watch$2,458

Full specifications

Case

3 specs
Diameter
39mm
41mm
Thickness
12.2mm
12mm
Lug-to-Lug
46.5mm
47mm

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
1980 RN Divers Automatic Re-Issue Watch

Movement

3 specs
Caliber
M100 COSC
ETA 2824-2
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$2,458

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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.

CWC 1980 RN Divers Automatic Re-Issue Watch

The CWC 1980 RN Divers Automatic Re-Issue Watch is widely praised for its faithful recreation of vintage details, including its dial layout with markers touching the chapter ring and pointed crown guards. Owners and reviewers note its reasonable size and the original minute hand design. However, the lume is a point of contention: some find the "faux patina" tint too gold and glossy, while others specifically criticize the mismatched lume color between hands and hour markers, with the hour marker lume described as overly shiny and convex. On balance, the CWC 1980 RN Divers Automatic Re-Issue Watch is highly regarded for its authentic vintage aesthetic and wearability, despite mixed opinions on the lume application.

From video reviewers

The watch's accurate movement is a notable strength. A potential weakness is its relatively high price point. Reviewers disagree on the watch's water-resistance, with one reviewer suggesting it could be improved and the other not mentioning any issues with water-resistance.

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