Side by side

Christopher Ward C1 Moonphase 40vsGrand Seiko SLGH017

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
SLGH017
Grand SeikoSLGH017
MSRP $10,500

At a glance

17 of 29 specs differ
Diameter
C1 Moonphase 4047.9mm
SLGH01740mm
Power Reserve
C1 Moonphase 4038h
SLGH01780h
Water Resistance
C1 Moonphase 4030m
SLGH017100m
MSRP
C1 Moonphase 40$3,050
SLGH017$10,500

Full specifications

Case

8 specs
Category
Dress
Diameter
47.9mm
40mm
Thickness
13.3mm
11.7mm
Lug-to-Lug
47.9mm
47mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Finish
Brushed + Polished
Brushed and polished
Water Resistance
30m
100m

Crystal & Dial

3 specs
AR Coating
Underside
Yes
Dial Color
Blue
Black
Lume
SLN X1 WL C1
None

Movement

5 specs
Caliber
SW220
9SA5
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
80h
Jewels
26
25
Complications
Moonphase, Day-date
None

Pricing

1 specs
MSRP
$3,050
$10,500

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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 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.

Grand Seiko SLGH017

Grand Seiko SLGH017 owners and reviewers widely praise its impeccable finishing on the applied markers and handset, and its lightweight titanium case and bracelet. The high-beat 9SA5 movement is noted for its approximately 80-hour power reserve, with accuracy figures reported by owners ranging from +4 sec/day to +5 to -3 seconds per day, though some owners express concerns about accuracy deviating significantly from specifications. Some find the "Night Birch" dial stunning and appreciate the Evo 9 case design, while others note the dial texture appears less pronounced on its matte black surface and criticize the handset's proportions and lack of lume. The Grand Seiko SLGH017 is priced at €10,500. On balance, owners and reviewers rate the Grand Seiko SLGH017 highly for its lightweight titanium construction and impeccable finishing.

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