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

At MSRP the Oblvlo GCM Mechanical is the cheaper of the two at $231, against $3,000 for the Seiko Prospex SPEEDTIMER — a $2,769 gap before any retailer discounting.

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

The Seiko Prospex SPEEDTIMER wears larger at 42.5mm versus 41mm for the Oblvlo GCM Mechanical — a 1.5mm difference across the dial.

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

The Oblvlo GCM Mechanical is rated to 50m versus 10m for the Seiko Prospex SPEEDTIMER.

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

The Seiko Prospex SPEEDTIMER carries a 45-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?

Both watches run automatic movements — the Oblvlo GCM Mechanical uses the Miyota 82S5 and the Seiko Prospex SPEEDTIMER uses the 8R46.

Side by side

Oblvlo GCM MechanicalvsSeiko Prospex SPEEDTIMER

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

srq037j1

MSRP $3,000

At a glance

13 of 29 specs differ

Diameter

GCM Mechanical41mm

Prospex SPEEDTIMER42.5mm

Power Reserve

GCM Mechanical42h

Prospex SPEEDTIMER45h

Water Resistance

GCM Mechanical50m

Prospex SPEEDTIMER100m

MSRP

GCM Mechanical$231

Prospex SPEEDTIMER$3,000

Full specifications

Case

6 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

8R46

Power Reserve

42h

45h

Jewels

Pricing

1 specs

MSRP

$231

$3,000

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Oblvlo GCM MechanicalvsSeiko Prospex SPEEDTIMER

At a glance

Full specifications

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