Which is cheaper, the Mark Time Watches M 1 or the Seiko Prospex Sea?

At MSRP the Mark Time Watches M 1 is the cheaper of the two at $345, against $625 for the Seiko Prospex Sea — a $280 gap before any retailer discounting.

Which is bigger, the Mark Time Watches M 1 or the Seiko Prospex Sea?

The Seiko Prospex Sea wears larger at 43.8mm versus 42mm for the Mark Time Watches M 1 — a 1.8mm difference across the dial.

Which has better water resistance, the Mark Time Watches M 1 or the Seiko Prospex Sea?

The Seiko Prospex Sea is rated to 200m versus 100m for the Mark Time Watches M 1.

What movement does the Mark Time Watches M 1 run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Mark Time Watches M 1 uses the Miyota 9039 and the Seiko Prospex Sea uses the 4R35.

Side by side

Mark Time Watches M 1vsSeiko Prospex Sea

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

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Mark Time Watches M 1

m-1

MSRP $345

Seiko Prospex Sea

srpe37

MSRP $625

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At a glance

12 of 29 specs differ

Diameter

M 142mm

Prospex Sea43.8mm

Power Reserve

M 1—

Prospex Sea41h

Water Resistance

M 1100m

Prospex Sea200m

MSRP

M 1$345

Prospex Sea$625

Full specifications

Case

5 specs

Crystal & Dial

3 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Dark Blue

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Miyota 9039

4R35

Power Reserve

—

41h

Jewels

Pricing

1 specs

MSRP

$345

$625

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Mark Time Watches M 1vsSeiko Prospex Sea

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