Side by side

Bremont Supermarine 300MvsGrand Seiko SBGH281

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
SBGH281
Grand SeikoSBGH281
MSRP $6,300

At a glance

11 of 29 specs differ
Diameter
Supermarine 300M40mm
SBGH28140mm
Power Reserve
Supermarine 300M40h
SBGH28155h
Water Resistance
Supermarine 300M300m
SBGH281100m
MSRP
Supermarine 300M$3,550
SBGH281$6,300

Full specifications

Case

6 specs
Category
Diver
Dress
Thickness
12mm
13.3mm
Lug-to-Lug
46.2mm
Lug Width
20mm
19mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Green
Black

Movement

2 specs
Caliber
BE-92AE
9S85
Power Reserve
40h
55h

Pricing

1 specs
MSRP
$3,550
$6,300

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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 SBGH281

The Grand Seiko SBGH281 is lauded for its 44GS-style case, which exemplifies the brand's "Grammar of Design" with its sharp facets and broad case band, and its Hi-Beat 36000vph Caliber 9S85 movement, noted for an ultra-smooth second hand. Reviewers highlight the exceptional finishing, including Zaratsu polishing and hand-polished markers, as offering significant value at its €6,200 price point. The watch features an accuracy rating of +5/–3 seconds per day, a 55-hour power reserve, and 100-meter water resistance, all executed to Grand Seiko's high standards, and is limited to 1,500 pieces. Overall, reviewers rate the Grand Seiko SBGH281 highly for its iconic case design and superb finishing at its price.

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