Side by side

Christopher Ward C63 Sealander Extreme GMTvsSeiko Prospex Sea Save the Ocean Special Edition

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

At a glance

14 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
Prospex Sea Save the Ocean Special Edition45mm
Power Reserve
C63 Sealander Extreme GMT56h
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
C63 Sealander Extreme GMT150m
Prospex Sea Save the Ocean Special Edition200m
MSRP
C63 Sealander Extreme GMT$1,850
Prospex Sea Save the Ocean Special Edition$625

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
48mm
45mm
Thickness
12.05mm
13.2mm
Lug-to-Lug
48mm
47.7mm
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
200m

Crystal & Dial

2 specs
AR Coating
Underside
Anti-reflective coating on inner surface
Lume
SLN X1 BL / GL
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
SW330
4R36
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
41h
Jewels
25
24
Complications
GMT, Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,850
$625

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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.

Seiko Prospex Sea Save the Ocean Special Edition

The Seiko Prospex Sea Save the Ocean Special Edition is widely praised for its attractive, unique, and textured dials, often described as having a "Grand Seiko feel" at a more accessible price point, with specific mentions of wave patterns, lagoon hues, and manta ray motifs. Owners appreciate the smooth bezel operation and satisfactory lume. Accuracy figures vary, with one owner reporting +5 seconds per day, while another notes a range from +1/+2 to about -6 seconds per day. The 6R35 movement offers a 70-hour power reserve, and some models feature sapphire crystals. Criticisms include a desire for exhibition casebacks and concerns about the quality and security of the stamped metal clasps and bracelets, which are frequently described as rattly or underwhelming, though this is noted as a common Seiko trait. Some owners are split on the number of Save the Ocean variations and dislike the cyclops magnifier.

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