Side by side

Bremont Supermarine 300MvsGrand Seiko SBGW281

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
SBGW281
Grand SeikoSBGW281
MSRP $4,900

At a glance

13 of 29 specs differ
Diameter
Supermarine 300M40mm
SBGW28137.3mm
Power Reserve
Supermarine 300M40h
SBGW28172h
Water Resistance
Supermarine 300M300m
SBGW28130m
MSRP
Supermarine 300M$3,550
SBGW281$4,900

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
37.3mm
Thickness
12mm
11.7mm
Lug-to-Lug
44.3mm
Lug Width
20mm
19mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
30m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Green
Black

Movement

3 specs
Caliber
BE-92AE
9S64
Type
Automatic
Manual
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$3,550
$4,900

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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 SBGW281

Grand Seiko SBGW281 owners and reviewers alike praise its classic 37mm size and timeless, no-bezel design, with enthusiasts calling these manual-wind models "perfect Grand Seikos" for their thin profile, accessible price, and dial symmetry. The champagne dial is noted for its evocative, melting snow aesthetic, complemented by a gold seconds hand and a box crystal. The winding action is described as exceptionally smooth with satisfying clicky feedback, and the lug-to-lug measurement is approximately 45mm. This timepiece is splash resistant and retails for US$4,800. On balance, enthusiasts and reviewers highly regard the Grand Seiko SBGW281 for its elegant proportions and refined dial presentation.

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