What movement does the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic run compared to the Grand Seiko STGF387?

The Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic runs a automatic caliber (Sellita SW220-1), while the Grand Seiko STGF387 runs a quartz (4J51).

Side by side

Marathon JDD (Jumbo Day/Date) Anthracite Diver's AutomaticvsGrand Seiko STGF387

Q: Which is cheaper, the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic or the Grand Seiko STGF387?

At MSRP the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic is the cheaper of the two at $3,250, against $4,200 for the Grand Seiko STGF387 — a $950 gap before any retailer discounting.

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

Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

46mm-anthracite-large-divers-automatic-jdd

MSRP $3,250

Grand Seiko STGF387

stgf387g

MSRP $4,200

At a glance

12 of 29 specs differ

Diameter

JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm

STGF38726mm

Power Reserve

JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h

STGF38740h

Water Resistance

JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m

STGF387100m

MSRP

JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250

STGF387$4,200

Full specifications

Case

7 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Dial Color

Anthracite

Black

Movement

2 specs

Caliber

Sellita SW220-1

4J51

Type

Automatic

Quartz

Pricing

1 specs

MSRP

$3,250

$4,200

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