Side by side

Bremont Supermarine 300MvsGrand Seiko SBGD228

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
SBGD228
Grand SeikoSBGD228
MSRP $273,000

At a glance

13 of 29 specs differ
Diameter
Supermarine 300M40mm
SBGD22844.5mm
Power Reserve
Supermarine 300M40h
SBGD228192h
Water Resistance
Supermarine 300M300m
SBGD228100m
MSRP
Supermarine 300M$3,550
SBGD228$273,000

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
40mm
44.5mm
Thickness
12mm
14.4mm
Lug-to-Lug
52mm
Lug Width
20mm
23mm
Material
904L Stainless Steel
Gold
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Green
Black

Movement

3 specs
Caliber
BE-92AE
9R01
Type
Automatic
Spring Drive
Power Reserve
40h
192h

Pricing

1 specs
MSRP
$3,550
$273,000

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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 SBGD228

The Grand Seiko SBGD228 is a limited edition luxury watch featuring a rose gold case, a red mother-of-pearl dial with garnets and diamonds, and the 8-day Spring Drive Caliber 9R01, noted for its accuracy of ±10 seconds per month. Owners are divided on its aesthetic, with some finding it stunning and elegant, while others consider it too "bling" and gaudy, though all acknowledge it is eye-catching. On balance, owners and reviewers acknowledge the Grand Seiko SBGD228's striking and opulent design, supported by its exclusive movement and luxurious materials.

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