Side by side

Christopher Ward C63 Sealander GMTvsSeiko Astron GPS Solar 2025 Limited Edition

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
Astron GPS Solar 2025 Limited Edition
SeikoAstron GPS Solar 2025 Limited Edition
MSRP $2,600

At a glance

17 of 29 specs differ
Diameter
C63 Sealander GMT42mm
Astron GPS Solar 2025 Limited Edition42mm
Power Reserve
C63 Sealander GMT56h
Astron GPS Solar 2025 Limited Edition40h
Water Resistance
C63 Sealander GMT150m
Astron GPS Solar 2025 Limited Edition100m
MSRP
C63 Sealander GMT$1,675
Astron GPS Solar 2025 Limited Edition$2,600

Full specifications

Case

7 specs
Thickness
11.5mm
12mm
Lug-to-Lug
48.5mm
47.9mm
Lug Width
22mm
14mm
Material
Stainless Steel
Titanium
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
150m
100m
Caseback
Display
Solid

Crystal & Dial

3 specs
AR Coating
Inner
Super-clear coating
Dial Color
Blue
Black
Lume
SLN X1 BL C1
LumiBrite on hands and index(es)

Movement

6 specs
Caliber
SW330
3X62
Type
Automatic
Quartz
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
40h
Jewels
25
10
Complications
GMT, Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,675
$2,600

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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.

Seiko Astron GPS Solar 2025 Limited Edition

The Seiko Astron GPS Solar 2025 Limited Edition is widely praised for its advanced GPS time and date adjustment capabilities, powered by light to eliminate battery changes. Owners and reviewers highlight its impressive accuracy and the convenience of automatic time zone updates, with some specifically commending the wearability of the 39mm size and its clean, simple design. However, reception of the GPS signal requires an unobstructed view of the sky, and manual time zone adjustments are necessary for Daylight Saving Time on some variants. One owner notes a slight imperfection in chapter ring alignment on the 39mm model. On balance, owners and reviewers rate the Seiko Astron GPS Solar 2025 Limited Edition highly for its satellite-powered timekeeping and improved wearability in the 39mm configuration.

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