Which is cheaper, the Slow Watches Jo series or the Seiko Astron?

At MSRP the Slow Watches Jo series is the cheaper of the two at $235, against $2,500 for the Seiko Astron — a $2,265 gap before any retailer discounting.

Which is bigger, the Slow Watches Jo series or the Seiko Astron?

The Seiko Astron wears larger at 42mm versus 38mm for the Slow Watches Jo series — a 4mm difference across the dial.

Which has better water resistance, the Slow Watches Jo series or the Seiko Astron?

The Slow Watches Jo series is rated to 100m versus 10m for the Seiko Astron.

What movement does the Slow Watches Jo series run compared to the Seiko Astron?

Both watches run quartz movements — the Slow Watches Jo series uses the Ronda 505.24 and the Seiko Astron uses the 5X83.

Side by side

Slow Watches Jo seriesvsSeiko Astron

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

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Slow Watches Jo series

slow-jo-09-24-hour-octagon-watch

MSRP $235

Seiko Astron

ssh159j1

MSRP $2,500

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Buy from Seiko ↗

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At a glance

13 of 29 specs differ

Diameter

Jo series38mm

Astron42mm

Power Reserve

Jo series40h

Astron40h

Water Resistance

Jo series100m

Astron100m

MSRP

Jo series$235

Astron$2,500

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal

Mineral

Sapphire

AR Coating

Inner

Super-clear coating

Dial Color

Cream

Black

Lume

None

LumiBrite on hands and index(es)

Movement

2 specs

Caliber

Ronda 505.24

5X83

Jewels

Pricing

1 specs

MSRP

—

$2,500

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Slow Watches Jo seriesvsSeiko Astron

At a glance

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