Which is cheaper, the Boldr Blastoise or the Grand Seiko SBGA427?

At MSRP the Boldr Blastoise is the cheaper of the two at $449, against $5,800 for the Grand Seiko SBGA427 — a $5,351 gap before any retailer discounting.

Which is bigger, the Boldr Blastoise or the Grand Seiko SBGA427?

The Boldr Blastoise wears larger at 40mm versus 39mm for the Grand Seiko SBGA427 — a 1mm difference across the dial.

Which has better water resistance, the Boldr Blastoise or the Grand Seiko SBGA427?

The Boldr Blastoise is rated to 200m versus 100m for the Grand Seiko SBGA427.

Which has a longer power reserve, the Boldr Blastoise or the Grand Seiko SBGA427?

The Grand Seiko SBGA427 carries a 72-hour power reserve against 40 hours on the Boldr Blastoise.

What movement does the Boldr Blastoise run compared to the Grand Seiko SBGA427?

The Boldr Blastoise runs a automatic caliber (Seiko (SII) NH37), while the Grand Seiko SBGA427 runs a spring drive (9R65).

Side by side

Boldr BlastoisevsGrand Seiko SBGA427

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

Boldr Blastoise

blastoise

MSRP $449

Grand Seiko SBGA427

sbga427g

MSRP $5,800

At a glance

13 of 29 specs differ

Diameter

Blastoise40mm

SBGA42739mm

Power Reserve

Blastoise40h

SBGA42772h

Water Resistance

Blastoise200m

SBGA427100m

MSRP

Blastoise$449

SBGA427$5,800

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Inner

Yes

Dial Color

Blastoise

Black

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

Seiko (SII) NH37

9R65

Type

Automatic

Spring Drive

Power Reserve

40h

72h

Pricing

1 specs

MSRP

$449

$5,800

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Boldr BlastoisevsGrand Seiko SBGA427

At a glance

Full specifications

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