Bremont Supermarine 300MvsOceaneva GMT Titanium Automatic Deep Marine Explorer 1250M

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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.

Bremont Supermarine 300M at true scale

Supermarine 300M

Oceaneva GMT Titanium Automatic Deep Marine Explorer 1250M at true scale

GMT Titanium Automatic Deep Marine Explorer 1250M

Diameter

40mm

42mm

Thickness

12mm

lowest

15.8mm

Water Resistance

300m

1250m

highest

MSRP

$3,550

$749

lowest

Movement

Bremont BE-92AE

Seiko NH34

Case

6 specs
Diameter
40mm
42mm
Thickness
12mm
15.8mm
Lug-to-Lug
n/a
n/a
Lug Width
20mm
22mm
Material
904L Stainless Steel
Titanium
Water Resistance
300m
1250m

Crystal & Dial

1 specs
Dial Color
Green
n/a

Movement

1 specs
Caliber
Bremont BE-92AE
Seiko NH34

Pricing

1 specs
MSRP
$3,550
$749
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Bremont Supermarine 300M

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.

Oceaneva GMT Titanium Automatic Deep Marine Explorer 1250M

Owners widely praise the Oceaneva GMT Titanium Automatic Deep Marine Explorer 1250M for its exceptional value, robust titanium construction, and impressive 1250m water resistance, with one owner noting it has been fantastic for years. The watch features an uncommon mother-of-pearl dial option and BGW9 lume, powered by the reliable Seiko NH34 automatic GMT movement. It has been observed as a blend of design elements from established luxury dive and GMT watches, with a price point around $225-$299 depending on discounts. Overall, owners and reviewers rate the Oceaneva GMT Titanium Automatic Deep Marine Explorer 1250M highly for its rugged build and compelling spec sheet at its price.

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