Side by side

Christopher Ward C63 Sealander Extreme GMTvsCWC RN Quartz Divers Watch Mk.2, Matte Top

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

C63 Sealander Extreme GMT
Christopher WardC63 Sealander Extreme GMT
MSRP $1,850
RN Quartz Divers Watch Mk.2, Matte Top
CWCRN Quartz Divers Watch Mk.2, Matte Top
MSRP $604

At a glance

16 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
RN Quartz Divers Watch Mk.2, Matte Top41mm
Power Reserve
C63 Sealander Extreme GMT56h
RN Quartz Divers Watch Mk.2, Matte Top40h
Water Resistance
C63 Sealander Extreme GMT150m
RN Quartz Divers Watch Mk.2, Matte Top300m
MSRP
C63 Sealander Extreme GMT$1,850
RN Quartz Divers Watch Mk.2, Matte Top$604

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
48mm
41mm
Thickness
12.05mm
12mm
Lug-to-Lug
48mm
47mm
Lug Width
22mm
20mm
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
300m

Crystal & Dial

3 specs
AR Coating
Underside
Yes
Dial Color
Black
CWC RN Quartz Divers Watch Mk.2, Matte Top (RN300-MT QS120)
Lume
SLN X1 BL / GL
Super-LumiNova

Movement

5 specs
Caliber
SW330
Ronda 517
Type
Automatic
Quartz
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
40h
Complications
GMT, Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,850
$604

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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 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.

CWC RN Quartz Divers Watch Mk.2, Matte Top

Owners widely praise the CWC RN Quartz Divers Watch Mk.2, Matte Top for its excellent matte case finishing, precise seconds hand alignment, and dial reminiscent of vintage military watches. The Mk.2 upgrades, including a sapphire crystal, improved lume, and a precise 120-click bezel described as perfection with no play, are consistently highlighted as significant improvements over earlier versions. One owner noted the quartz movement gained 8 seconds over several months. Overall, owners rate the CWC RN Quartz Divers Watch Mk.2, Matte Top highly for its solid construction, military significance, and terrific value.

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