Which is cheaper, the MKII Project 300 or the Seiko Prospex Sea The Black Series?

At MSRP the Seiko Prospex Sea The Black Series is the cheaper of the two at $765, against $1,995 for the MKII Project 300 — a $1,230 gap before any retailer discounting.

Which is bigger, the MKII Project 300 or the Seiko Prospex Sea The Black Series?

The Seiko Prospex Sea The Black Series wears larger at 45mm versus 41.25mm for the MKII Project 300 — a 3.8mm difference across the dial.

Which has better water resistance, the MKII Project 300 or the Seiko Prospex Sea The Black Series?

The MKII Project 300 is rated to 300m versus 200m for the Seiko Prospex Sea The Black Series.

What movement does the MKII Project 300 run compared to the Seiko Prospex Sea The Black Series?

Both watches run automatic movements — the MKII Project 300 uses the ETA 2824-2 and the Seiko Prospex Sea The Black Series uses the 4R36.

Side by side

MKII Project 300vsSeiko Prospex Sea The Black Series

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

Add a watch

MKII Project 300

project-300-big-t-date-100

MSRP $1,995

Seiko Prospex Sea The Black Series

srpk43

MSRP $765

At a glance

13 of 29 specs differ

Diameter

Project 30041.25mm

Prospex Sea The Black Series45mm

Power Reserve

Project 300—

Prospex Sea The Black Series41h

Water Resistance

Project 300300m

Prospex Sea The Black Series200m

MSRP

Project 300$1,995

Prospex Sea The Black Series$765

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

—

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

ETA 2824-2

4R36

Power Reserve

—

41h

Jewels

Pricing

1 specs

MSRP

$1,995

$765

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MKII Project 300vsSeiko Prospex Sea The Black Series

At a glance

Full specifications

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