Bremont Supermarine 300MvsIXDAO Bronze Dive Watch

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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

Bronze Dive Watch
Diameter
40mm
39mm
Lug-to-Lug
n/a
47mm
Thickness
12mm
11.5mm
lowest
Water Resistance
300m
highest
200m
MSRP
$3,550
$269
lowest
Movement
Bremont BE-92AE
PT5000
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.
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 praise the IXDAO Bronze 39mm Automatic Dive Watch for its dial aesthetics, with some appreciating the earth tones and resemblance to luxury dive watches, and others specifically liking the Chinese numeral variant. The 39mm case is noted as being manageable on smaller wrists due to its 47mm lug-to-lug measurement. Some owners express concern over the reliability of the PT5000 movement's keyless works, while others find the original strap to be of good quality. The design is seen as a missed opportunity by some, though the symbol and Cali dial are praised. Overall, owners appreciate the IXDAO Bronze 39mm Automatic Dive Watch for its unique dial options and wearability on smaller wrists, despite some reservations about the movement.
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