Which is cheaper, the Oblvlo FM SL Day-Date Square or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

At MSRP the Oblvlo FM SL Day-Date Square is the cheaper of the two at $158, against $1,150 for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition — a $992 gap before any retailer discounting.

Which is bigger, the Oblvlo FM SL Day-Date Square or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition wears larger at 39.5mm versus 39mm for the Oblvlo FM SL Day-Date Square — a 0.5mm difference across the dial.

Which has better water resistance, the Oblvlo FM SL Day-Date Square or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Oblvlo FM SL Day-Date Square is rated to 50m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition.

Which has a longer power reserve, the Oblvlo FM SL Day-Date Square or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition carries a 72-hour power reserve against 42 hours on the Oblvlo FM SL Day-Date Square.

What movement does the Oblvlo FM SL Day-Date Square run compared to the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

Both watches run automatic movements — the Oblvlo FM SL Day-Date Square uses the Miyota 8215 and the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition uses the 6R55.

Side by side

Oblvlo FM SL Day-Date SquarevsSeiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

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

Oblvlo FM SL Day-Date Square

FM-SL-DD-D

MSRP $158

Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

spb517j1

MSRP $1,150

At a glance

13 of 29 specs differ

Diameter

FM SL Day-Date Square39mm

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition39.5mm

Power Reserve

FM SL Day-Date Square42h

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition72h

Water Resistance

FM SL Day-Date Square50m

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition200m

MSRP

FM SL Day-Date Square$158

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition$1,150

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Miyota 8215

6R55

Power Reserve

42h

72h

Jewels

Pricing

1 specs

MSRP

$158

$1,150

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