Side by side

Bremont Supermarine 300MvsGrand Seiko SBGX261

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
SBGX261
Grand SeikoSBGX261
MSRP $2,700

At a glance

12 of 29 specs differ
Diameter
Supermarine 300M40mm
SBGX26137mm
Power Reserve
Supermarine 300M40h
SBGX26140h
Water Resistance
Supermarine 300M300m
SBGX261100m
MSRP
Supermarine 300M$3,550
SBGX261$2,700

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
37mm
Thickness
12mm
10mm
Lug-to-Lug
44.6mm
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
9F62
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$3,550
$2,700

Follow this matchup

Get a note when Bremont Supermarine 300M vs Grand Seiko SBGX261 gets more votes, a community discussion, or a price drop. No account needed.

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 SBGX261

Owners widely praise the Grand Seiko SBGX261 for its exceptional finishing, rivaling mechanical watches, and the high-precision, hand-assembled 9F quartz movement, noted for its accuracy within 10 seconds per year. The 37mm case size and versatile design are frequently highlighted as key strengths, making it a comfortable and stylish everyday watch. However, the bracelet's lack of micro-adjustments and taper is a recurring criticism, and one owner notes the second hand's inconsistent alignment with markers. On balance, owners rate the Grand Seiko SBGX261 highly for its superb finishing and the technical prowess of its 9F quartz movement at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.