Which is cheaper, the Oblvlo FM SL Day-Date Square or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition?

At MSRP the Oblvlo FM SL Day-Date Square is the cheaper of the two at $158, against $3,900 for the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition — a $3,742 gap before any retailer discounting.

Which is bigger, the Oblvlo FM SL Day-Date Square or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition?

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition wears larger at 42.6mm versus 39mm for the Oblvlo FM SL Day-Date Square — a 3.6mm difference across the dial.

Which has better water resistance, the Oblvlo FM SL Day-Date Square or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition?

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition is rated to 300m versus 50m for the Oblvlo FM SL Day-Date Square.

Which has a longer power reserve, the Oblvlo FM SL Day-Date Square or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition?

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC 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 Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition?

Both watches run automatic movements — the Oblvlo FM SL Day-Date Square uses the Miyota 8215 and the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition uses the 8L45.

Side by side

Oblvlo FM SL Day-Date SquarevsSeiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC 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 Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition

hbf002j1

MSRP $3,900

At a glance

13 of 29 specs differ

Diameter

FM SL Day-Date Square39mm

Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition42.6mm

Power Reserve

FM SL Day-Date Square42h

Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition72h

Water Resistance

FM SL Day-Date Square50m

Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition300m

MSRP

FM SL Day-Date Square$158

Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition$3,900

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, index(es) and bezel

Movement

3 specs

Caliber

Miyota 8215

8L45

Power Reserve

42h

72h

Jewels

Pricing

1 specs

MSRP

$158

$3,900

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