Bremont Supermarine 300MvsEdox Grand Ocean 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.

Supermarine 300M

Grand Ocean Automatic
Diameter
40mm
40mm
Thickness
12mm
11.9mm
lowest
Water Resistance
300m
300m
MSRP
$3,550
$1,740
lowest
Movement
Bremont BE-92AE
Caliber 80 (SW 200)
Case
3 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
Owners widely praise the Edox Grand Ocean Automatic for its impressive finishing and quality at its price point, with some noting it wears smaller than its 40mm case dimensions suggest. A reviewer found the watch charming and comfortable, though they flagged unnecessary dial labeling and less robust lume compared to dedicated sport watches. One owner noted difficulties finding aftermarket strap options for the Edox Grand Ocean Automatic. On balance, owners and reviewers generally regard the Edox Grand Ocean Automatic positively for its build quality and comfortable wearability.
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