CWC SBS Black Ice QuartzvsMarathon TSAR (Tritium Search & Rescue) Diver's Quartz
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

SBS Black Ice Quartz

TSAR (Tritium Search & Rescue) Diver's Quartz
Diameter
n/a
46mm
Lug-to-Lug
n/a
48mm
Thickness
n/a
14mm
Water Resistance
300m
300m
MSRP
$666
lowest
$1,550
Movement
Ronda 517
Swiss High-Torque Quartz
Case
5 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the CWC SBS Black Ice Quartz Watch for its legible, uncluttered dial, excellent lume, and robust build quality, with a fantastic bezel featuring zero back play. The 41mm case, noted for its comfortable 12mm thickness and durable black PVD coating, wears well, and the fixed lugs are seen as a positive for strap changes. One owner notes the lume is readable throughout the night, and the second hand aligns closely with indices. However, some owners consider its £700 price high for a quartz diver, questioning its value, and one owner reported issues with a faulty mechanism and poor retailer customer service. Overall, owners rate the CWC SBS Black Ice Quartz Watch highly for its bulletproof, toolish design and practical legibility.
Marathon TSAR (Tritium Search & Rescue) Diver's Quartz owners widely praise its high quality, extreme legibility, and bright tritium tubes that glow without needing to charge. The simple, functional dial layout and ISO 6425 certification are also noted strengths. One owner reports owning a TSAR for nearly 15 years with no problems and found Marathon's service experience to be great. Some owners mention the 41mm TSAR wears small and has a field watch aesthetic, while others note the crown can dig into the wrist. The tritium tubes in the hands provide excellent brightness in the dark. On balance, owners rate the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz highly for its exceptional tritium lume and robust, legible design.
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