Which is cheaper, the DeMarcos The Ironside 200 or the Seiko Prospex Sea 1965 Heritage Diver's Watch?

At MSRP the DeMarcos The Ironside 200 is the cheaper of the two at $599, against $1,300 for the Seiko Prospex Sea 1965 Heritage Diver's Watch — a $701 gap before any retailer discounting.

Which is bigger, the DeMarcos The Ironside 200 or the Seiko Prospex Sea 1965 Heritage Diver's Watch?

The Seiko Prospex Sea 1965 Heritage Diver's Watch wears larger at 40mm versus 39mm for the DeMarcos The Ironside 200 — a 1mm difference across the dial.

Which has better water resistance, the DeMarcos The Ironside 200 or the Seiko Prospex Sea 1965 Heritage Diver's Watch?

The Seiko Prospex Sea 1965 Heritage Diver's Watch is rated to 300m versus 200m for the DeMarcos The Ironside 200.

Which has a longer power reserve, the DeMarcos The Ironside 200 or the Seiko Prospex Sea 1965 Heritage Diver's Watch?

The Seiko Prospex Sea 1965 Heritage Diver's Watch carries a 72-hour power reserve against 42 hours on the DeMarcos The Ironside 200.

What movement does the DeMarcos The Ironside 200 run compared to the Seiko Prospex Sea 1965 Heritage Diver's Watch?

Both watches run automatic movements — the DeMarcos The Ironside 200 uses the Miyota 9015 and the Seiko Prospex Sea 1965 Heritage Diver's Watch uses the Seiko 6R55.

DeMarcos The Ironside 200vsSeiko Prospex Sea 1965 Heritage Diver's Watch

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DeMarcos The Ironside 200

MSRP $599

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Buy from DeMarcos Used on eBay

Seiko Prospex Sea 1965 Heritage Diver's Watch

MSRP $1,300

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Buy from Seiko Used on eBay

The measurements

Sized up.

Catalogue photos are all shot at the same flattering size. These aren't: every case below shares one millimetre scale.

The Ironside 200

Prospex Sea 1965 Heritage Diver's Watch

Diameter

Across the case, crown excluded.

39mm

40mm

Lug-to-Lug

The number that decides fit.

46mm

lowest

46.4mm

Thickness

How it sits under a cuff.

12.2mm

lowest

13mm

Water Resistance

Rated in metres, not marketing.

200m

300m

highest

Power Reserve

How long it runs off the wrist.

42h

72h

highest

MSRP

Sticker price, new.

$599

lowest

$1,300

Movement

What drives the hands.

Miyota 9015

Seiko 6R55

Spec

The Ironside 200

Prospex Sea 1965 Heritage Diver's Watch

Case

5 specs

Crystal & Dial

3 specs

Crystal Shape

n/a

Curved

AR Coating

n/a

Anti-reflective coating on inner surface

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Miyota 9015

Seiko 6R55

Power Reserve

42h

72h

Jewels

Pricing

1 specs

MSRP

$599

$1,300

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DeMarcos The Ironside 200vsSeiko Prospex Sea 1965 Heritage Diver's Watch

Sized up.

Case

Crystal & Dial

Movement

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