Side by side

Bremont Supermarine 300MvsGrand Seiko SBGE277

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
SBGE277
Grand SeikoSBGE277
MSRP $6,800

At a glance

13 of 29 specs differ
Diameter
Supermarine 300M40mm
SBGE27744mm
Power Reserve
Supermarine 300M40h
SBGE27772h
Water Resistance
Supermarine 300M300m
SBGE277200m
MSRP
Supermarine 300M$3,550
SBGE277$6,800

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
40mm
44mm
Thickness
12mm
14.7mm
Lug-to-Lug
50.8mm
Lug Width
20mm
21mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Green
Black

Movement

3 specs
Caliber
BE-92AE
9R66
Type
Automatic
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$3,550
$6,800

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What people say

Owners + reviewers, side by side

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 and 42mm case sizes, with owners noting the 42mm wears well on smaller wrists due to its lug design. One owner highlights the 13mm thinness of the 40mm case, considered compact for a 300m diver. The watch is priced at $1375. On balance, owners and reviewers appreciate the Bremont Supermarine 300M for its wearability and compact dimensions, especially for a dive watch.

Grand Seiko SBGE277

Owners find the Grand Seiko SBGE277 gorgeous, with one owner noting their wrist size can accommodate it. The watch was purchased in Japan for $4950 USD, benefiting from a 35-year low yen. One owner expresses significant concern over reported negative experiences with the brand's New Jersey service center, fearing long wait times and subpar treatment. On balance, owners find the Grand Seiko SBGE277 gorgeous, though service center experiences are a notable concern for some.

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