Side by side

CWC SBS Black Ice Quartz WatchvsMarathon GPQ (General Purpose Quartz) Field Watch

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

SBS Black Ice Quartz Watch
CWCSBS Black Ice Quartz Watch
MSRP $666
GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420

At a glance

12 of 29 specs differ
Diameter
SBS Black Ice Quartz Watch40mm
GPQ (General Purpose Quartz) Field Watch34mm
Power Reserve
SBS Black Ice Quartz Watch40h
GPQ (General Purpose Quartz) Field Watch40h
Water Resistance
SBS Black Ice Quartz Watch300m
GPQ (General Purpose Quartz) Field Watch30m
MSRP
SBS Black Ice Quartz Watch$666
GPQ (General Purpose Quartz) Field Watch$420

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
40mm
34mm
Thickness
12mm
11.5mm
Lug-to-Lug
46mm
41mm
Lug Width
20mm
16mm
Material
Stainless Steel
Fibreshell Composite
Water Resistance
300m
30m

Crystal & Dial

3 specs
Crystal
Sapphire
Acrylic
AR Coating
Yes
Inner
Dial Color
CWC SBS Black Ice Quartz Watch
Black

Movement

1 specs
Caliber
Ronda 517
Swiss High-Torque Quartz (3J, EOL)

Pricing

1 specs
MSRP
$666
$420

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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.

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.

Marathon GPQ (General Purpose Quartz) Field Watch

Owners widely praise the Marathon GPQ (General Purpose Quartz) Field Watch for its rugged quartz movement, accuracy, and tritium lume. Reviewers and owners alike highlight its solid build, legibility, and comfortable, lightweight wear, making it particularly well-suited for smaller wrists. Some owners, however, consider the price point of $350-420 to be somewhat high. On balance, the consensus is that owners rate the Marathon GPQ (General Purpose Quartz) Field Watch highly for its dependable quartz accuracy and excellent tritium lume.

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