Lum-Tec Solar MarinevsMarathon 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.

Lum-Tec Solar Marine at true scale

Solar Marine

Marathon TSAR (Tritium Search & Rescue) Diver's Quartz at true scale

TSAR (Tritium Search & Rescue) Diver's Quartz

Diameter

39mm

46mm

Lug-to-Lug

43.5mm

lowest

48mm

Thickness

10.7mm

lowest

14mm

Water Resistance

300m

300m

MSRP

$463

lowest

$1,550

Movement

Automatic

Swiss High-Torque Quartz

Case

4 specs
Diameter
39mm
46mm
Thickness
10.7mm
14mm
Lug-to-Lug
43.5mm
48mm
Material
316L Stainless Steel (DLC coated)
316L Stainless Steel

Crystal & Dial

1 specs
Dial Color
Steel
Black

Movement

2 specs
Caliber
n/a
Swiss High-Torque Quartz
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$463
$1,550
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Lum-Tec Solar Marine

Owners widely praise the Lum-Tec Solar Marine for its all-black diver design, excellent lume, and rugged, tank-like build. This 39mm watch is noted as a great smaller option, fitting a 7-inch wrist perfectly and suitable for extensive water activities. One owner cautions that the PVD coating may wear and chip within a year. On balance, owners rate the Lum-Tec Solar Marine highly for its rugged build and excellent lume in a compact dive watch package.

Marathon TSAR (Tritium Search & Rescue) Diver's Quartz

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.