BERNY Diver AM155MvsBremont 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 AM155M

Supermarine 300M
Diameter
42mm
40mm
Lug-to-Lug
50mm
n/a
Thickness
13mm
12mm
lowest
Water Resistance
200m
300m
highest
MSRP
$146
lowest
$3,550
Movement
Miyota 8215
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 BERNY BERNY-Men Automatic Diver Watch-AM155M for its exceptional anti-reflective coating and outstanding lume, with one owner describing it as an "absolute lume monster" that surpasses higher-priced alternatives. The watch's design is seen by some as inspired by the Seiko Monster, while others consider it a clone of the Halios Holotype, and the prominent "BERNY" branding on the dial is a deterrent for some potential buyers. Accuracy varies, with one owner reporting +17 seconds per day, while others do not specify. The Miyota 8215 movement is a point of contention for some enthusiasts, who feel it is a significant drawback at the $300 price point, though it is considered acceptable at lower price points or if replaced with an NH-35A. Overall, owners rate the BERNY BERNY-Men Automatic Diver Watch-AM155M highly for its impressive lume and anti-reflective coating at its price, despite some reservations about the movement and branding.
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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