Which is cheaper, the Boldr Blastoise or the Seiko King Seiko KSK?

At MSRP the Boldr Blastoise is the cheaper of the two at $449, against $2,000 for the Seiko King Seiko KSK — a $1,551 gap before any retailer discounting.

Which is bigger, the Boldr Blastoise or the Seiko King Seiko KSK?

The Boldr Blastoise wears larger at 40mm versus 38.3mm for the Seiko King Seiko KSK — a 1.7mm difference across the dial.

Which has better water resistance, the Boldr Blastoise or the Seiko King Seiko KSK?

The Boldr Blastoise is rated to 200m versus 10m for the Seiko King Seiko KSK.

Which has a longer power reserve, the Boldr Blastoise or the Seiko King Seiko KSK?

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

What movement does the Boldr Blastoise run compared to the Seiko King Seiko KSK?

Both watches run automatic movements — the Boldr Blastoise uses the Seiko (SII) NH37 and the Seiko King Seiko KSK uses the 6R55.

Side by side

Boldr BlastoisevsSeiko King Seiko KSK

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

Boldr Blastoise

blastoise

MSRP $449

Seiko King Seiko KSK

spb387j1

MSRP $2,000

At a glance

14 of 29 specs differ

Diameter

Blastoise40mm

King Seiko KSK38.3mm

Power Reserve

Blastoise40h

King Seiko KSK72h

Water Resistance

Blastoise200m

King Seiko KSK100m

MSRP

Blastoise$449

King Seiko KSK$2,000

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Box

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Blastoise

Black

Lume

Super-LumiNova

LumiBrite on Hands

Movement

3 specs

Caliber

Seiko (SII) NH37

6R55

Power Reserve

40h

72h

Jewels

Pricing

1 specs

MSRP

$449

$2,000

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Boldr BlastoisevsSeiko King Seiko KSK

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