Marathon TSAR (Tritium Search & Rescue) Diver's QuartzvsScurfa Diver One D1-500

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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.

TSAR (Tritium Search & Rescue) Diver's Quartz

Diver One D1-500
Diameter
46mm
40mm
Lug-to-Lug
48mm
47.7mm
lowest
Thickness
14mm
lowest
14.4mm
Water Resistance
300m
500m
highest
MSRP
$1,550
$286
lowest
Movement
Swiss High-Torque Quartz
ETA F06.412
Case
6 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
Owners and reviewers widely praise the Scurfa Diver One D1-500 for its robust 40mm case, excellent legibility, and precise 120-click bezel, with many finding its size ideal for everyday wear. The scratch-resistant, single-domed sapphire crystal is highlighted, and while lume is generally lauded as great, one reviewer noted it was not as impressive as on another model. The aluminum bezel is a welcome variation from more common black bezels. The watch is noted for its 500m water resistance, a feature that requires specific construction elements like a larger case back gasket. On balance, owners and reviewers rate the Scurfa Diver One D1-500 highly for its tool-like build quality and legibility at its price point.
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