Which is cheaper, the Boldr Blastoise or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

At MSRP the Boldr Blastoise is the cheaper of the two at $449, against $1,150 for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition — a $701 gap before any retailer discounting.

Which is bigger, the Boldr Blastoise or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Boldr Blastoise wears larger at 40mm versus 39.5mm for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition — a 0.5mm difference across the dial.

Which has better water resistance, the Boldr Blastoise or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Boldr Blastoise is rated to 200m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition.

Which has a longer power reserve, the Boldr Blastoise or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition carries a 72-hour power reserve against 40 hours on the Boldr Blastoise.

What movement does the Boldr Blastoise run compared to the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

Both watches run automatic movements — the Boldr Blastoise uses the Seiko (SII) NH37 and the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition uses the 6R55.

Side by side

Boldr BlastoisevsSeiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

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

Boldr Blastoise

blastoise

MSRP $449

Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

spb517j1

MSRP $1,150

At a glance

11 of 29 specs differ

Diameter

Blastoise40mm

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition39.5mm

Power Reserve

Blastoise40h

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition72h

Water Resistance

Blastoise200m

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition200m

MSRP

Blastoise$449

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition$1,150

Full specifications

Case

3 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Blastoise

Black

Lume

Super-LumiNova

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Seiko (SII) NH37

6R55

Power Reserve

40h

72h

Jewels

Pricing

1 specs

MSRP

$449

$1,150

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