Which is cheaper, the Aera Instruments D-1 or the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic?

At MSRP the Aera Instruments D-1 is the cheaper of the two at $2,000, against $3,250 for the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic — a $1,250 gap before any retailer discounting.

Which is bigger, the Aera Instruments D-1 or the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic?

The Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic wears larger at 46mm versus 44mm for the Aera Instruments D-1 — a 2mm difference across the dial.

Which has a longer power reserve, the Aera Instruments D-1 or the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic?

The Aera Instruments D-1 carries a 41-hour power reserve against 40 hours on the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic.

What movement does the Aera Instruments D-1 run compared to the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic?

Both watches run automatic movements — the Aera Instruments D-1 uses the Sellita SW200-1 and the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic uses the Sellita SW220-1.

Side by side

Aera Instruments D-1vsMarathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

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

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Aera Instruments D-1

d-1-diver

MSRP $2,000

See the full D-1

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

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

MSRP $3,250

See the full JDD (Jumbo Day/Date) Anthracite Diver's Automatic

Buy from Aera Instruments ↗

Buy used on eBay ↗

Buy from Marathon ↗

Buy used on eBay ↗

At a glance

9 of 29 specs differ

Diameter

D-144mm

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

Power Reserve

D-141h

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

Water Resistance

D-1300m

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

MSRP

D-1$2,000

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

Full specifications

Case

5 specs

Crystal & Dial

1 specs

Dial Color

—

Anthracite

Movement

2 specs

Caliber

Sellita SW200-1

Sellita SW220-1

Power Reserve

41h

40h

Pricing

1 specs

MSRP

$2,000

$3,250

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