Side by side

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

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
Miyako
HELMMiyako
MSRP $375

At a glance

13 of 29 specs differ
Diameter
JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm
Miyako40mm
Power Reserve
JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h
Miyako42h
Water Resistance
JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m
Miyako200m
MSRP
JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250
Miyako$375

Full specifications

Case

5 specs
Diameter
46mm
40mm
Thickness
18mm
13.75mm
Lug-to-Lug
55mm
47mm
Material
316L Stainless Steel (Anthracite IP)
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Double-Domed
AR Coating
Inner
Yes
Dial Color
Anthracite
Gray
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Sellita SW220-1
Power Reserve
40h
42h
Jewels
25
24

Pricing

1 specs
MSRP
$3,250
$375

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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.

HELM Miyako

HELM Miyako owners widely praise its exceptional value and quality, with multiple reports highlighting its stunning appearance and dial details. The watch is noted for its excellent accuracy, with figures around +1.5 to +2 seconds per day. One owner found the HELM Miyako to be tough and versatile, fitting well on a 6.6-inch wrist. Overall, owners consider the HELM Miyako an amazing value and a great watch, worth the wait for its availability.

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