ARES DIVER-1 GMT Swiss AutomaticvsBremont Supermarine 300M


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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.

DIVER-1 GMT Swiss Automatic

Supermarine 300M
Diameter
41mm
40mm
Lug-to-Lug
49.5mm
n/a
Thickness
13.3mm
12mm
lowest
Water Resistance
1000m
highest
300m
MSRP
$2,850
lowest
$3,550
Movement
ETA 2893-2
Bremont BE-92AE
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.
Owners widely praise the ARES DIVER-1 GMT Swiss Automatic for its excellent legibility, strong lume, and comfortable rubber strap, with some highlighting its unique triple-timezone capability via the 24-hour bezel and chapter ring. The watch is considered a great value, with used examples around $700, and features an ETA 2893-2 automatic movement. However, community members frequently report significant customer service and communication issues, with some receiving watches not as described. Overall, owners rate the ARES DIVER-1 GMT Swiss Automatic highly for its tool-watch functionality and value, despite noted customer service challenges.
The Bremont Supermarine 300M is praised for its comfortable 40mm case, which some owners find wears well even on smaller wrists due to its lug design, outperforming some 40mm watches. One forum contributor notes the 40mm case is relatively compact for a 300m diver and is priced at $1375. A reviewer found the 40mm case comfortable. On balance, owners and reviewers appreciate the Bremont Supermarine 300M's wearable 40mm case size and comfortable wearability.
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