Which is cheaper, the Oblvlo GCM Mechanical or the Seiko Prospex Sea Save the Ocean Special Edition?

At MSRP the Oblvlo GCM Mechanical is the cheaper of the two at $231, against $625 for the Seiko Prospex Sea Save the Ocean Special Edition — a $394 gap before any retailer discounting.

Which is bigger, the Oblvlo GCM Mechanical or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition wears larger at 45mm versus 41mm for the Oblvlo GCM Mechanical — a 4mm difference across the dial.

Which has better water resistance, the Oblvlo GCM Mechanical or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition is rated to 200m versus 50m for the Oblvlo GCM Mechanical.

Which has a longer power reserve, the Oblvlo GCM Mechanical or the Seiko Prospex Sea Save the Ocean Special Edition?

The Oblvlo GCM Mechanical carries a 42-hour power reserve against 41 hours on the Seiko Prospex Sea Save the Ocean Special Edition.

What movement does the Oblvlo GCM Mechanical run compared to the Seiko Prospex Sea Save the Ocean Special Edition?

Both watches run automatic movements — the Oblvlo GCM Mechanical uses the Miyota 82S5 and the Seiko Prospex Sea Save the Ocean Special Edition uses the 4R36.

Side by side

Oblvlo GCM MechanicalvsSeiko Prospex Sea Save the Ocean Special Edition

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

Oblvlo GCM Mechanical

GCM-MUT

MSRP $231

Seiko Prospex Sea Save the Ocean Special Edition

srpf77

MSRP $625

At a glance

12 of 29 specs differ

Diameter

GCM Mechanical41mm

Prospex Sea Save the Ocean Special Edition45mm

Power Reserve

GCM Mechanical42h

Prospex Sea Save the Ocean Special Edition41h

Water Resistance

GCM Mechanical50m

Prospex Sea Save the Ocean Special Edition200m

MSRP

GCM Mechanical$231

Prospex Sea Save the Ocean Special Edition$625

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Miyota 82S5

4R36

Power Reserve

42h

41h

Jewels

Pricing

1 specs

MSRP

$231

$625

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