Aerotec Watches Aerotec Ace X GMT DivervsMarathon MSAR (Medium Search & Rescue) Diver's Automatic
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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.

Aerotec Ace X GMT Diver

MSAR (Medium Search & Rescue) Diver's Automatic
Diameter
41.5mm
36mm
Thickness
n/a
18mm
Water Resistance
200m
300m
highest
MSRP
$459
lowest
$1,800
Movement
Seiko NH34
Sellita SW200-1
Case
6 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Aerotec Ace X GMT Diver is praised for its excellent timekeeping from the Seiko NH34 movement, with one owner reporting immaculate condition after minimal wear. The watch features a 41.5mm case and 200m water resistance. Overall, owners rate the Aerotec Ace X GMT Diver highly for its reliable Seiko NH34 movement and solid build quality.
The Marathon MSAR (Medium Search & Rescue) Diver's Automatic is widely praised for its utilitarian design, exceptional legibility, and robust build quality, meeting ISO 6425 dive watch standards and approved for military use. Reviewers highlight its bright tritium lume for excellent visibility in darkness and its durable, no-nonsense construction suitable for demanding conditions. The watch is noted for its comfortable wearability, though one reviewer found the stock rubber strap required modification. Priced at $900 CAD, the Marathon MSAR (Medium Search & Rescue) Diver's Automatic is a sober tool watch assembled in Switzerland. Overall, reviewers rate the Marathon MSAR (Medium Search & Rescue) Diver's Automatic highly for its uncompromising focus on utility, durability, and legibility.
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