Which is cheaper, the Bremont Vulcan or the Grand Seiko SLGB023?

At MSRP the Bremont Vulcan is the cheaper of the two at $5,150, against $12,400 for the Grand Seiko SLGB023 — a $7,250 gap before any retailer discounting.

Which is bigger, the Bremont Vulcan or the Grand Seiko SLGB023?

The Bremont Vulcan wears larger at 42mm versus 40.8mm for the Grand Seiko SLGB023 — a 1.2mm difference across the dial.

Which has a longer power reserve, the Bremont Vulcan or the Grand Seiko SLGB023?

The Grand Seiko SLGB023 carries a 72-hour power reserve against 40 hours on the Bremont Vulcan.

What movement does the Bremont Vulcan run compared to the Grand Seiko SLGB023?

The Bremont Vulcan runs a automatic caliber, while the Grand Seiko SLGB023 runs a spring drive (9RB1).

Side by side

Bremont VulcanvsGrand Seiko SLGB023

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

Bremont Vulcan

VULCAN-R-S

MSRP $5,150

Grand Seiko SLGB023

slgb023g

MSRP $12,400

At a glance

13 of 29 specs differ

Diameter

Vulcan42mm

SLGB02340.8mm

Power Reserve

Vulcan40h

SLGB02372h

Water Resistance

Vulcan—

SLGB023300m

MSRP

Vulcan$5,150

SLGB023$12,400

Full specifications

Case

7 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Dial Color

Regular length (15cm - 19cm wrist size)

Black

Movement

3 specs

Caliber

—

9RB1

Type

Automatic

Spring Drive

Power Reserve

40h

72h

Pricing

1 specs

MSRP

$5,150

$12,400

Follow this matchup

Get a note when Bremont Vulcan vs Grand Seiko SLGB023 gets more votes, a community discussion, or a price drop. No account needed.

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.

Dan Henrymicro

Adjacent matchups

People also compared

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

Dan Henry 1972vsGrand Seiko SLGB023 Grand Seiko SLGB023vsYema Flygraf Navigator Grand Seiko SLGB023vsYema Rallygraf Alpine Cup Series Limited Edition Geckota Chronotimer Sports EditionvsGrand Seiko SLGB023 Bremont Supermarine 300MvsBremont Vulcan Bremont VulcanvsWolbrook Skindiver Professional

Edit this comparison Add another watch Explore more 39–43mm watches

Bremont VulcanvsGrand Seiko SLGB023

At a glance

Full specifications

Follow this matchup

More watches worth a look

1972

Supermarine 300M

Flygraf Navigator

Skindiver Professional

Rallygraf Alpine Cup Series Limited Edition

D5 Tropic Auto

Chronotimer Sports Edition

Spence 300

People also compared