Which is bigger, the Seiko Prospex Sea Save the Ocean Special Edition or the Zero West LS-1 Land Speed 1927?

The Seiko Prospex Sea Save the Ocean Special Edition wears larger at 45mm versus 44mm for the Zero West LS-1 Land Speed 1927 — a 1mm difference across the dial.

What movement does the Seiko Prospex Sea Save the Ocean Special Edition run compared to the Zero West LS-1 Land Speed 1927?

Both watches run automatic movements — the Seiko Prospex Sea Save the Ocean Special Edition uses the 4R36 and the Zero West LS-1 Land Speed 1927 uses the ETA 7750.

Side by side

Seiko Prospex Sea Save the Ocean Special EditionvsZero West LS-1 Land Speed 1927

Q: Which has better water resistance, the Seiko Prospex Sea Save the Ocean Special Edition or the Zero West LS-1 Land Speed 1927?

The Seiko Prospex Sea Save the Ocean Special Edition is rated to 200m versus 100m for the Zero West LS-1 Land Speed 1927.

Q: Which has a longer power reserve, the Seiko Prospex Sea Save the Ocean Special Edition or the Zero West LS-1 Land Speed 1927?

The Zero West LS-1 Land Speed 1927 carries a 48-hour power reserve against 41 hours on the Seiko Prospex Sea Save the Ocean Special Edition.

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

Add a watch

Seiko Prospex Sea Save the Ocean Special Edition

srpf77

MSRP $625

Zero West LS-1 Land Speed 1927

ls-1-land-speed-bullhead-chronograph-1927

At a glance

11 of 29 specs differ

Diameter

Prospex Sea Save the Ocean Special Edition45mm

LS-1 Land Speed 192744mm

Power Reserve

Prospex Sea Save the Ocean Special Edition41h

LS-1 Land Speed 192748h

Water Resistance

Prospex Sea Save the Ocean Special Edition200m

LS-1 Land Speed 1927100m

MSRP

Prospex Sea Save the Ocean Special Edition$625

LS-1 Land Speed 1927—

Full specifications

Case

5 specs

Crystal & Dial

2 specs

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

4R36

ETA 7750

Power Reserve

41h

48h

Jewels

Pricing

1 specs

MSRP

$625

—

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Seiko Prospex Sea Save the Ocean Special EditionvsZero West LS-1 Land Speed 1927

At a glance

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