Which is cheaper, the Oblvlo GCM Mechanical or the Seiko Prospex SPEEDTIMER Mechanical?

At MSRP the Oblvlo GCM Mechanical is the cheaper of the two at $231, against $995 for the Seiko Prospex SPEEDTIMER Mechanical — a $764 gap before any retailer discounting.

Which is bigger, the Oblvlo GCM Mechanical or the Seiko Prospex SPEEDTIMER Mechanical?

The Oblvlo GCM Mechanical wears larger at 41mm versus 39.5mm for the Seiko Prospex SPEEDTIMER Mechanical — a 1.5mm difference across the dial.

Which has better water resistance, the Oblvlo GCM Mechanical or the Seiko Prospex SPEEDTIMER Mechanical?

The Oblvlo GCM Mechanical is rated to 50m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical.

Which has a longer power reserve, the Oblvlo GCM Mechanical or the Seiko Prospex SPEEDTIMER Mechanical?

The Seiko Prospex SPEEDTIMER Mechanical carries a 72-hour power reserve against 42 hours on the Oblvlo GCM Mechanical.

What movement does the Oblvlo GCM Mechanical run compared to the Seiko Prospex SPEEDTIMER Mechanical?

Both watches run automatic movements — the Oblvlo GCM Mechanical uses the Miyota 82S5 and the Seiko Prospex SPEEDTIMER Mechanical uses the 6R55.

Side by side

Oblvlo GCM MechanicalvsSeiko Prospex SPEEDTIMER Mechanical

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 SPEEDTIMER Mechanical

spb513j1

MSRP $995

At a glance

12 of 29 specs differ

Diameter

GCM Mechanical41mm

Prospex SPEEDTIMER Mechanical39.5mm

Power Reserve

GCM Mechanical42h

Prospex SPEEDTIMER Mechanical72h

Water Resistance

GCM Mechanical50m

Prospex SPEEDTIMER Mechanical200m

MSRP

GCM Mechanical$231

Prospex SPEEDTIMER Mechanical$995

Full specifications

Case

5 specs

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

Super-LumiNova

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Miyota 82S5

6R55

Power Reserve

42h

72h

Jewels

Pricing

1 specs

MSRP

$231

$995

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