Side by side

Bremont Supermarine 300MvsGrand Seiko SBGJ259

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
SBGJ259
Grand SeikoSBGJ259
MSRP $7,700

At a glance

11 of 29 specs differ
Diameter
Supermarine 300M40mm
SBGJ25940mm
Power Reserve
Supermarine 300M40h
SBGJ25955h
Water Resistance
Supermarine 300M300m
SBGJ259100m
MSRP
Supermarine 300M$3,550
SBGJ259$7,700

Full specifications

Case

6 specs
Category
Diver
GMT
Thickness
12mm
14mm
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
9S86
Power Reserve
40h
55h

Pricing

1 specs
MSRP
$3,550
$7,700

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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 SBGJ259

The Grand Seiko SBGJ259 "Urban Bamboo" is admired for its striking green dial, though one owner notes its color appears more yellow in person than in promotional photos. It is considered a dressier piece compared to other models. On balance, owners appreciate the Grand Seiko SBGJ259 for its unique dial color and dressy aesthetic.

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