Which is cheaper, the Bremont Vulcan or the Seiko Astron GPS Solar 2025 Limited Edition?

At MSRP the Seiko Astron GPS Solar 2025 Limited Edition is the cheaper of the two at $2,900, against $5,150 for the Bremont Vulcan — a $2,250 gap before any retailer discounting.

Which is bigger, the Bremont Vulcan or the Seiko Astron GPS Solar 2025 Limited Edition?

The Seiko Astron GPS Solar 2025 Limited Edition wears larger at 43.4mm versus 42mm for the Bremont Vulcan — a 1.4mm difference across the dial.

What movement does the Bremont Vulcan run compared to the Seiko Astron GPS Solar 2025 Limited Edition?

The Bremont Vulcan runs a automatic caliber, while the Seiko Astron GPS Solar 2025 Limited Edition runs a quartz (5X83).

Side by side

Bremont VulcanvsSeiko Astron GPS Solar 2025 Limited Edition

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

Bremont Vulcan

VULCAN-R-S

MSRP $5,150

Seiko Astron GPS Solar 2025 Limited Edition

ssh183j1

MSRP $2,900

At a glance

15 of 29 specs differ

Diameter

Vulcan42mm

Astron GPS Solar 2025 Limited Edition43.4mm

Power Reserve

Vulcan40h

Astron GPS Solar 2025 Limited Edition40h

Water Resistance

Vulcan—

Astron GPS Solar 2025 Limited Edition100m

MSRP

Vulcan$5,150

Astron GPS Solar 2025 Limited Edition$2,900

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Super-clear coating

Dial Color

Regular length (15cm - 19cm wrist size)

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

—

5X83

Type

Automatic

Quartz

Jewels

Pricing

1 specs

MSRP

$5,150

$2,900

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