Side by side

Christopher Ward C63 Sealander GMTvsMarathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

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

C63 Sealander GMT
Christopher WardC63 Sealander GMT
MSRP $1,675
JDD (Jumbo Day/Date) Anthracite Diver's Automatic
MarathonJDD (Jumbo Day/Date) Anthracite Diver's Automatic
MSRP $3,250

At a glance

15 of 29 specs differ
Diameter
C63 Sealander GMT42mm
JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm
Power Reserve
C63 Sealander GMT56h
JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h
Water Resistance
C63 Sealander GMT150m
JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m
MSRP
C63 Sealander GMT$1,675
JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250

Full specifications

Case

8 specs
Category
GMT
Diver
Diameter
42mm
46mm
Thickness
11.5mm
18mm
Lug-to-Lug
48.5mm
55mm
Material
Stainless Steel
316L Stainless Steel (Anthracite IP)
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
150m
300m
Caseback
Display
Solid

Crystal & Dial

2 specs
Dial Color
Blue
Anthracite
Lume
SLN X1 BL C1
None

Movement

4 specs
Caliber
SW330
Sellita SW220-1
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
40h
Complications
GMT, Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,675
$3,250

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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.

Christopher Ward C63 Sealander GMT

The Christopher Ward C63 Sealander GMT is praised for its comfortable wearability, with reviewers noting its slim profile, short lugs, and 39mm case size, while others prefer the proportions of the 36mm version. The watch features a Light-catcher case with alternating brushed and polished surfaces, and the Bader bracelet is highlighted for its build quality and comfort at its price point. Some owners find the gloss white dial's text and indices small, and the orange accents can appear yellow. The Sellita SW330-2 movement provides caller GMT functionality and a 56-hour power reserve. On balance, owners and reviewers appreciate the Christopher Ward C63 Sealander GMT for its comfortable wearability and solid bracelet construction at its price.

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.

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