Side by side

Christopher Ward C1 Moonphase 40vsTudor Black Bay One 31 S&G

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
Black Bay One 31 S&G
TudorBlack Bay One 31 S&G
MSRP $6,850

At a glance

16 of 29 specs differ
Diameter
C1 Moonphase 4047.9mm
Black Bay One 31 S&G31mm
Power Reserve
C1 Moonphase 4038h
Black Bay One 31 S&G50h
Water Resistance
C1 Moonphase 4030m
Black Bay One 31 S&G100m
MSRP
C1 Moonphase 40$3,050
Black Bay One 31 S&G$6,850

Full specifications

Case

7 specs
Diameter
47.9mm
31mm
Thickness
13.3mm
9.5mm
Lug-to-Lug
47.9mm
46mm
Lug Width
20mm
17mm
Finish
Brushed + Polished
Polished + Satin
Water Resistance
30m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

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

Movement

5 specs
Caliber
SW220
MT5201
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
50h
Jewels
26
25
Complications
Moonphase, Day-date
None

Pricing

1 specs
MSRP
$3,050
$6,850

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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.

Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G is praised for its quiet luxury, combining brushed steel and warm gold accents for understated charm. Owners appreciate the brushed gold for a casual two-tone look and the champagne dial's surprising legibility. Some find the case sides too thick, and one user expressed a desire for a smaller S&G variant. The watch features the MT5612 movement with a 70-hour power reserve and a date function, within a 200-meter water-resistant case. Overall, owners and reviewers highlight the Tudor Black Bay One 31 S&G's balanced two-tone aesthetic as its primary appeal.

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