Side by side

Serica Ref. 5303 Diving ChronometervsCWC SBS Black Ice Quartz 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
SBS Black Ice Quartz Watch
CWCSBS Black Ice Quartz Watch
MSRP $666

At a glance

10 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
SBS Black Ice Quartz Watch40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
SBS Black Ice Quartz Watch40h
Water Resistance
Ref. 5303 Diving Chronometer300m
SBS Black Ice Quartz Watch300m
MSRP
Ref. 5303 Diving Chronometer$1,768
SBS Black Ice Quartz Watch$666

Full specifications

Case

3 specs
Diameter
39mm
40mm
Thickness
12.2mm
12mm
Lug-to-Lug
46.5mm
46mm

Crystal & Dial

2 specs
Dial Color
Enamel Black
CWC SBS Black Ice Quartz Watch
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
M100 COSC
Ronda 517
Type
Automatic
Quartz
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$666

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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 SBS Black Ice Quartz Watch

Owners widely praise the CWC SBS Black Ice Quartz Watch for its legible, uncluttered dial, excellent Super-LumiNova lume, and robust build quality, noting its comfortable 12mm thickness and durable PVD coating. The bezel action is described as having zero back play, and the fixed lugs are appreciated for easy strap changes. One owner reported the lume is readable throughout the night, while another flagged a faulty mechanism requiring replacement and poor retailer customer service. The £700 price is considered high by some compared to similar quartz divers, leading to questions about its value. Overall, owners rate the CWC SBS Black Ice Quartz Watch highly for its bombproof, toolish design and practical aesthetics.

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