Edox Grand Ocean DatevsMarathon 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.

Grand Ocean Date

TSAR (Tritium Search & Rescue) Diver's Quartz
Diameter
42mm
46mm
Lug-to-Lug
n/a
48mm
Thickness
11.2mm
lowest
14mm
Water Resistance
300m
300m
MSRP
$1,115
lowest
$1,550
Movement
Caliber 53 (Ronda 515)
Swiss High-Torque Quartz
Case
4 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise Edox's finishing and quality, with one owner recommending the Edox Grand Ocean Date without hesitation after purchasing it at a good price. One owner suggests the Edox Grand Ocean Date's aesthetic would be improved by a smaller case size and notes the strap requires an additional hole for a snug fit. Overall, owners rate the Edox Grand Ocean Date highly for its impressive finishing and build quality at the price point.
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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