Which is cheaper, the Manufaktur Waldhoff Mercury or the Seiko Prospex Sea Save the Ocean Special Edition?

At MSRP the Seiko Prospex Sea Save the Ocean Special Edition is the cheaper of the two at $650, against $799 for the Manufaktur Waldhoff Mercury — a $149 gap before any retailer discounting.

Which is bigger, the Manufaktur Waldhoff Mercury or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition wears larger at 43.8mm versus 41mm for the Manufaktur Waldhoff Mercury — a 2.8mm difference across the dial.

Which has a longer power reserve, the Manufaktur Waldhoff Mercury or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition carries a 41-hour power reserve against 40 hours on the Manufaktur Waldhoff Mercury.

What movement does the Manufaktur Waldhoff Mercury run compared to the Seiko Prospex Sea Save the Ocean Special Edition?

Both watches run automatic movements — the Manufaktur Waldhoff Mercury uses the 7780SW and the Seiko Prospex Sea Save the Ocean Special Edition uses the 4R35.

Side by side

Manufaktur Waldhoff MercuryvsSeiko Prospex Sea Save the Ocean Special Edition

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

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Manufaktur Waldhoff Mercury

MSRP $799

See the full Mercury

Seiko Prospex Sea Save the Ocean Special Edition

MSRP $650

See the full Prospex Sea Save the Ocean Special Edition

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Buy used on eBay ↗

Buy from Seiko ↗

Buy used on eBay ↗

At a glance

11 of 29 specs differ

Diameter

Mercury41mm

Prospex Sea Save the Ocean Special Edition43.8mm

Power Reserve

Mercury40h

Prospex Sea Save the Ocean Special Edition41h

Water Resistance

Mercury—

Prospex Sea Save the Ocean Special Edition200m

MSRP

Mercury$799

Prospex Sea Save the Ocean Special Edition$650

Full specifications

Case

4 specs

Crystal & Dial

3 specs

AR Coating

—

Anti-reflective coating on inner surface

Dial Color

Blue

—

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

7780SW

4R35

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$799

$650

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Manufaktur Waldhoff MercuryvsSeiko Prospex Sea Save the Ocean Special Edition

At a glance

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