Side by side

Marathon JDD (Jumbo Day/Date) Anthracite Diver's AutomaticvsSinn U50 HYDRO SDR with TEGIMENT option

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
U50 HYDRO SDR with TEGIMENT option
SinnU50 HYDRO SDR with TEGIMENT option
MSRP $3,110

At a glance

18 of 29 specs differ
Diameter
JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm
U50 HYDRO SDR with TEGIMENT option41mm
Power Reserve
JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h
U50 HYDRO SDR with TEGIMENT option40h
Water Resistance
JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m
U50 HYDRO SDR with TEGIMENT option5,000m
MSRP
JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250
U50 HYDRO SDR with TEGIMENT option$3,110

Full specifications

Case

8 specs
Diameter
46mm
41mm
Thickness
18mm
11.8mm
Lug-to-Lug
55mm
Lug Width
22mm
20mm
Material
316L Stainless Steel (Anthracite IP)
Stainless Steel
Finish
Brushed and polished
bead-blasted
Water Resistance
300m
5000m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Underside
Dial Color
Anthracite
Black
Indices
Applied
Lume
None
Luminescent

Movement

4 specs
Caliber
Sellita SW220-1
Ronda 715 Li - SWISS MADE
Type
Automatic
Quartz
Jewels
25
5
Complications
None
Date

Pricing

1 specs
MSRP
$3,250
$3,110

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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.

Sinn U50 HYDRO SDR with TEGIMENT option

The Sinn U50 HYDRO SDR with TEGIMENT option is widely praised for its exceptional scratch resistance and legibility, with owners reporting no signs of wear after extended use. The oil-filled case contributes to extreme water resistance and a clear dial, while the fully tegimented construction offers a soft feel on the wrist. Reviewers note the compact 41mm size, though one owner found it did not wear as thin as expected due to its thickness. The lume is considered underwhelming by some, and the diving extension on the clasp can release too easily. It utilizes a quartz movement, which is noted as less accurate than previous thermo-compensated options. Overall, owners and reviewers rate the Sinn U50 HYDRO SDR with TEGIMENT option highly for its robust, legible, and virtually indestructible build at its price point.

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