Which is cheaper, the Oblvlo FM SL Day-Date Square or the Seiko Astron?

At MSRP the Oblvlo FM SL Day-Date Square is the cheaper of the two at $158, against $2,500 for the Seiko Astron — a $2,342 gap before any retailer discounting.

Which is bigger, the Oblvlo FM SL Day-Date Square or the Seiko Astron?

The Seiko Astron wears larger at 42mm versus 39mm for the Oblvlo FM SL Day-Date Square — a 3mm difference across the dial.

Which has better water resistance, the Oblvlo FM SL Day-Date Square or the Seiko Astron?

The Oblvlo FM SL Day-Date Square is rated to 50m versus 10m for the Seiko Astron.

Which has a longer power reserve, the Oblvlo FM SL Day-Date Square or the Seiko Astron?

The Oblvlo FM SL Day-Date Square carries a 42-hour power reserve against 40 hours on the Seiko Astron.

What movement does the Oblvlo FM SL Day-Date Square run compared to the Seiko Astron?

The Oblvlo FM SL Day-Date Square runs a automatic caliber (Miyota 8215), while the Seiko Astron runs a quartz (5X83).

Side by side

Oblvlo FM SL Day-Date SquarevsSeiko Astron

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 Astron

ssh159j1

MSRP $2,500

At a glance

14 of 29 specs differ

Diameter

FM SL Day-Date Square39mm

Astron42mm

Power Reserve

FM SL Day-Date Square42h

Astron40h

Water Resistance

FM SL Day-Date Square50m

Astron100m

MSRP

FM SL Day-Date Square$158

Astron$2,500

Full specifications

Case

7 specs

Crystal & Dial

2 specs

AR Coating

Inner

Super-clear coating

Lume

None

LumiBrite on hands and index(es)

Movement

4 specs

Caliber

Miyota 8215

5X83

Type

Automatic

Quartz

Power Reserve

42h

40h

Jewels

Pricing

1 specs

MSRP

$158

$2,500

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Oblvlo FM SL Day-Date SquarevsSeiko Astron

At a glance

Full specifications

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