Side by side

Bremont Supermarine 300MvsGrand Seiko SBGR261

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
SBGR261
Grand SeikoSBGR261
MSRP $4,900

At a glance

12 of 29 specs differ
Diameter
Supermarine 300M40mm
SBGR26139.5mm
Power Reserve
Supermarine 300M40h
SBGR26172h
Water Resistance
Supermarine 300M300m
SBGR26130m
MSRP
Supermarine 300M$3,550
SBGR261$4,900

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
39.5mm
Thickness
12mm
13.1mm
Lug-to-Lug
46.9mm
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

2 specs
Caliber
BE-92AE
9S65
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 SBGR261

Grand Seiko SBGR261 owners praise its perfect 39.5mm dimensions, beautiful cream lacquered dial with a silver date disc, and blued second hand, noting the excellent finishing for its price point and its suitability for formal events. Some find the design too safe and the cream dial with leather strap less appealing, while others flag its over 13mm thickness as too tall for a dress watch. The movement finishing is described as rudimentary, though the 9S65 automatic is considered well-made and a terrific value. Overall, owners rate the Grand Seiko SBGR261 highly for its classic design and excellent finishing at its price.

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