Side by side

Marathon JDD (Jumbo Day/Date) Anthracite Diver's AutomaticvsSeiko Prospex Land Mechanical

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

JDD (Jumbo Day/Date) Anthracite Diver's Automatic
MarathonJDD (Jumbo Day/Date) Anthracite Diver's Automatic
MSRP $3,250
Prospex Land Mechanical
SeikoProspex Land Mechanical
MSRP $995

At a glance

14 of 29 specs differ
Diameter
JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm
Prospex Land Mechanical39.5mm
Power Reserve
JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h
Prospex Land Mechanical72h
Water Resistance
JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m
Prospex Land Mechanical200m
MSRP
JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250
Prospex Land Mechanical$995

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
46mm
39.5mm
Thickness
18mm
12.7mm
Lug-to-Lug
55mm
46.4mm
Lug Width
22mm
20mm
Material
316L Stainless Steel (Anthracite IP)
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Anthracite
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Sellita SW220-1
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$3,250
$995

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

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

Owners widely praise the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic as a tough, underrated tool watch with lifestyle appeal, highlighting its robust build and tritium lume for excellent legibility. However, its 46mm size is a common criticism, with some finding it heavy and top-heavy, and the OEM rubber strap stiff. One owner noted the watch runs about 10 seconds fast after three days, and the ETA 2836-2 movement offers approximately two days of power reserve. On balance, owners and reviewers rate the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic highly for its robust tool-watch build and legibility, despite its substantial size.

Seiko Prospex Land Mechanical

Owners widely praise the Seiko Prospex Land Mechanical for its unique style, useful day-date complication, and value, with some finding it suitable as a one-watch-for-all-occasions. Accuracy and durability are noted as strengths, with one owner reporting good performance even in water submersion. However, multiple owners criticize its size, with figures around 41mm to 43mm and 14.4mm thickness being flagged as too large and thick for smaller wrists. The Hardlex crystal and a potentially loose inner compass bezel are also points of criticism. On balance, owners rate the Seiko Prospex Land Mechanical highly for its unique style and value, despite concerns over its substantial dimensions.

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