Which is cheaper, the Oak & Oscar The Humboldt GMT USSS Edition 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 $625, against $2,200 for the Oak & Oscar The Humboldt GMT USSS Edition — a $1,575 gap before any retailer discounting.

Which is bigger, the Oak & Oscar The Humboldt GMT USSS Edition or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition wears larger at 45mm versus 39.5mm for the Oak & Oscar The Humboldt GMT USSS Edition — a 5.5mm difference across the dial.

Which has a longer power reserve, the Oak & Oscar The Humboldt GMT USSS Edition 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 56 hours hours on the Oak & Oscar The Humboldt GMT USSS Edition.

What movement does the Oak & Oscar The Humboldt GMT USSS Edition run compared to the Seiko Prospex Sea Save the Ocean Special Edition?

Both watches run automatic movements — the Oak & Oscar The Humboldt GMT USSS Edition uses the Sellita SW330 and the Seiko Prospex Sea Save the Ocean Special Edition uses the 4R36.

Side by side

Oak & Oscar The Humboldt GMT USSS EditionvsSeiko Prospex Sea Save the Ocean Special Edition

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

Oak & Oscar The Humboldt GMT USSS Edition

HMBDLTGMTUSSS

MSRP $2,200

Seiko Prospex Sea Save the Ocean Special Edition

srpf77

MSRP $625

At a glance

14 of 29 specs differ

Diameter

The Humboldt GMT USSS Edition39.5mm

Prospex Sea Save the Ocean Special Edition45mm

Power Reserve

The Humboldt GMT USSS Edition56 hoursh

Prospex Sea Save the Ocean Special Edition41h

Water Resistance

The Humboldt GMT USSS Edition200m

Prospex Sea Save the Ocean Special Edition200m

MSRP

The Humboldt GMT USSS Edition$2,200

Prospex Sea Save the Ocean Special Edition$625

Full specifications

Case

7 specs

Crystal & Dial

3 specs

Crystal Shape

Double-domed

Flat

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

Super-LumiNova BGW9

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Sellita SW330

4R36

Power Reserve

56 hoursh

41h

Jewels

Pricing

1 specs

MSRP

$2,200

$625

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