Side by side

Christopher Ward C1 Moonphase 40vsSeiko 5 Sports SKX series

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

C1 Moonphase 40
Christopher WardC1 Moonphase 40
MSRP $3,050
5 Sports SKX series
Seiko5 Sports SKX series
MSRP $495

At a glance

17 of 29 specs differ
Diameter
C1 Moonphase 4047.9mm
5 Sports SKX series42.5mm
Power Reserve
C1 Moonphase 4038h
5 Sports SKX series41h
Water Resistance
C1 Moonphase 4030m
5 Sports SKX series100m
MSRP
C1 Moonphase 40$3,050
5 Sports SKX series$495

Full specifications

Case

7 specs
Category
GMT
Diameter
47.9mm
42.5mm
Thickness
13.3mm
13.6mm
Lug-to-Lug
47.9mm
46mm
Lug Width
20mm
22mm
Finish
Brushed + Polished
Brushed and polished
Water Resistance
30m
100m

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
AR Coating
Underside
Inner
Dial Color
Blue
Black
Lume
SLN X1 WL C1
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
SW220
4R34
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
41h
Jewels
26
24
Complications
Moonphase, Day-date
None

Pricing

1 specs
MSRP
$3,050
$495

Follow this matchup

Get a note when Christopher Ward C1 Moonphase 40 vs Seiko 5 Sports SKX series gets more votes, a community discussion, or a price drop. No account needed.

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 C1 Moonphase 40

Owners widely praise the Christopher Ward C1 Moonphase 40 for its captivating aventurine dial and photorealistic, luminescent moon, with many receiving compliments and finding it a stylish, lightweight, and comfortable daily wear. The in-house Calibre JJ04 module's 128-year moon tracking is a notable feature. However, multiple owners find the lack of dial indices and bezel markings, along with unlumed hands, makes precise time-telling difficult, with some describing it as more of a jewelry piece than a functional timepiece. One owner experienced a movement issue requiring warranty repair within the first year, and another noted frustration with customer service. The 40.5mm case size is considered sporty by some, and the design is described as "shouty" by a few. On balance, owners highly rate the Christopher Ward C1 Moonphase 40 for its stunning moonphase display and aesthetic appeal at its price point, despite legibility concerns.

From video reviewers

The aventurine dial and Globolight lume are praised for their realistic starry night effect. The 3 ATM water resistance is a significant limitation.

Seiko 5 Sports SKX series

The Seiko 5 Sports SKX series is widely praised as an excellent gateway watch, offering great value with a solid build and powerful lume. Owners widely report that the NH36 movement's accuracy is a "luck of the draw," with official specs allowing up to +/-40 seconds per day, though many experience +/-5 to 10 seconds. Some owners note the lack of a screw-down crown and 100m water resistance, while others highlight its ISO 6425 compliance, 200m water resistance, and screw-down crown as superior tool watch features. Some owners find the original SKX models heavier and bulkier than newer lines, while others praise its iconic, tough, and rugged dive watch design and proven durability. On balance, owners and reviewers rate the Seiko 5 Sports SKX series highly for its iconic, durable dive watch design and strong value proposition.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.