Certina DS-X GMTvsMarathon 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.

Certina DS-X GMT at true scale

DS-X GMT

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

TSAR (Tritium Search & Rescue) Diver's Quartz

Diameter

41.2mm

46mm

Lug-to-Lug

48.6mm

48mm

lowest

Thickness

12.2mm

lowest

14mm

Water Resistance

200m

300m

highest

MSRP

$643

lowest

$1,550

Movement

F06.865

Swiss High-Torque Quartz

Case

5 specs
Diameter
41.2mm
46mm
Thickness
12.15mm
14mm
Lug-to-Lug
48.56mm
48mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
n/a
Black

Movement

1 specs
Caliber
F06.865
Swiss High-Torque Quartz

Pricing

1 specs
MSRP
$643
$1,550
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Reviews

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

Certina DS-X GMT

Owners widely praise the Certina DS-X GMT for its functional GMT complication, rugged build, and value, with one owner noting its $269 price as a good deal for the well-made quality. Reviewers highlight its vibrant, fun design as a departure from typical offerings, and its practical dual-bezel system. Some owners find the quartz movement a no-brainer for accuracy and lower cost, while others prefer automatics and note the MSRP can be high. The inner 24-hour bezel's 90-click action is criticized for misalignment, and lume is described as functional but not exceptionally bright. One owner reports the bracelet clasp rattles. Overall, owners and reviewers rate the Certina DS-X GMT highly for its functional GMT complication and value at its price point.

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.

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