Side by side

Sinn 358 DIAPALvsChristopher Ward C63 Sealander Extreme GMT

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

358 DIAPAL
Sinn358 DIAPAL
MSRP $4,255
C63 Sealander Extreme GMT
Christopher WardC63 Sealander Extreme GMT
MSRP $1,850

At a glance

17 of 29 specs differ
Diameter
358 DIAPAL42mm
C63 Sealander Extreme GMT48mm
Power Reserve
358 DIAPAL48h
C63 Sealander Extreme GMT56h
Water Resistance
358 DIAPAL100m
C63 Sealander Extreme GMT150m
MSRP
358 DIAPAL$4,255
C63 Sealander Extreme GMT$1,850

Full specifications

Case

7 specs
Category
Tool
GMT
Diameter
42mm
48mm
Thickness
15mm
12.05mm
Lug-to-Lug
48mm
Finish
satinized
Brushed + Bead-blasted + Sandblasted
Water Resistance
100m
150m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
Dial Color
Anthracite
Black
Indices
Applied
Lume
Luminescent
SLN X1 BL / GL

Movement

5 specs
Caliber
LJP L100
SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
48h
56h
Jewels
26
25
Complications
GMT, Date, Chronograph
GMT, Moonphase, Day-date

Pricing

1 specs
MSRP
$4,255
$1,850

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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.

Sinn 358 DIAPAL

The Sinn 358 DIAPAL is widely praised as a handsome, unfussy tool watch with excellent legibility and solid construction, featuring a reliable and exact second timezone complication. Owners and reviewers highlight its DIAPAL oil-free escapement and Ar-Dehumidifying technology for contributing to its accuracy, and note the 42mm brushed stainless steel case is well-sized. One reviewer flags the skeletonized GMT hand as sometimes lacking legibility. Overall, owners and reviewers rate the Sinn 358 DIAPAL highly for its robust build and practical travel watch functionality.

Christopher Ward C63 Sealander Extreme GMT

Owners and reviewers widely praise the Christopher Ward C63 Sealander Extreme GMT for its excellent value, tactical and travel-ready design, and impressive lume, with the black dial being a collective favorite. Its 41mm brushed steel case is noted for comfort and wearability, complemented by a well-proportioned design and excellent legibility. The watch features a Sellita SW330-2 movement with a 56-hour power reserve and 150m water resistance, including a shock-absorbing mount. Some find its refinement slightly less than pricier alternatives, and its GMT movement is considered less practical than a flyer GMT. On balance, the Christopher Ward C63 Sealander Extreme GMT is highly regarded by owners and reviewers for its compelling blend of features, rugged design, and exceptional value.

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