Side by side

Christopher Ward C63 Sealander Extreme GMTvsMarathon TSAR (Tritium Search & Rescue) Diver's Quartz

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
TSAR (Tritium Search & Rescue) Diver's Quartz
MarathonTSAR (Tritium Search & Rescue) Diver's Quartz
MSRP $1,550

At a glance

15 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
TSAR (Tritium Search & Rescue) Diver's Quartz46mm
Power Reserve
C63 Sealander Extreme GMT56h
TSAR (Tritium Search & Rescue) Diver's Quartz40h
Water Resistance
C63 Sealander Extreme GMT150m
TSAR (Tritium Search & Rescue) Diver's Quartz300m
MSRP
C63 Sealander Extreme GMT$1,850
TSAR (Tritium Search & Rescue) Diver's Quartz$1,550

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
48mm
46mm
Thickness
12.05mm
14mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
300m

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Lume
SLN X1 BL / GL
None

Movement

5 specs
Caliber
SW330
Swiss High-Torque Quartz
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
$1,550

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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.

Marathon TSAR (Tritium Search & Rescue) Diver's Quartz

Owners widely praise the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz for its ISO 6425 certification and practical, everyday wearability, with one owner noting the movement sets and ticks fine with expected quartz accuracy. The bezel and crystal are also described as great. One owner reports the 41mm TSAR wears small and has a field watch aesthetic, while another notes the TSAR Medium, listed at 12mm thick, visually appears thicker. Overall, owners rate the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz highly for its robust build and practical design.

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