Which is cheaper, the Core Timepieces Original Sin or the Seiko Monster?

At MSRP the Core Timepieces Original Sin is the cheaper of the two at $549, against $550 for the Seiko Monster — a $1 gap before any retailer discounting.

Which is bigger, the Core Timepieces Original Sin or the Seiko Monster?

The Seiko Monster wears larger at 42.4mm versus 42mm for the Core Timepieces Original Sin — a 0.4mm difference across the dial.

Which has better water resistance, the Core Timepieces Original Sin or the Seiko Monster?

The Core Timepieces Original Sin is rated to 300m versus 200m for the Seiko Monster.

What movement does the Core Timepieces Original Sin run compared to the Seiko Monster?

Both watches run automatic movements — the Core Timepieces Original Sin uses the Seiko NH36A and the Seiko Monster uses the 4R36.

Side by side

Core Timepieces Original SinvsSeiko Monster

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

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Core Timepieces Original Sin

MSRP $549

Seiko Monster

srpe27

MSRP $550

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Buy from Seiko ↗

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At a glance

14 of 29 specs differ

Diameter

Original Sin42mm

Monster42.4mm

Power Reserve

Original Sin—

Monster41h

Water Resistance

Original Sin300m

Monster200m

MSRP

Original Sin$549

Monster$550

Full specifications

Case

7 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Hardlex

Dial Color

Red

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Seiko NH36A

4R36

Power Reserve

—

41h

Jewels

Pricing

1 specs

MSRP

—

$550

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42mm·Automatic·200m WR

$420MSRP

—Used

Borealis Watch Co.micro

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Core Timepieces Original SinvsSeiko Monster

At a glance

Full specifications

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