Side by side

Christopher Ward C1 Moonphase 37vsSeiko Prospex Sea Save the Ocean Special Edition

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

C1 Moonphase 37
Christopher WardC1 Moonphase 37
MSRP $3,050

At a glance

16 of 29 specs differ
Diameter
C1 Moonphase 3744.07mm
Prospex Sea Save the Ocean Special Edition45mm
Power Reserve
C1 Moonphase 3738h
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
C1 Moonphase 3730m
Prospex Sea Save the Ocean Special Edition200m
MSRP
C1 Moonphase 37$3,050
Prospex Sea Save the Ocean Special Edition$625

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
44.07mm
45mm
Thickness
13.1mm
13.2mm
Lug-to-Lug
44.07mm
47.7mm
Lug Width
20mm
22mm
Finish
Brushed + Polished
Brushed and polished
Water Resistance
30m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
SLN X1 WL C1
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
SW220
4R36
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
41h
Jewels
26
24
Complications
Moonphase
None

Pricing

1 specs
MSRP
$3,050
$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 C1 Moonphase 37

Owners widely praise the Christopher Ward C1 Moonphase 37 for its aventurine dial and moon display, with one user awarding it a perfect score for its celestial theme. However, the lack of hour markers and lume-less hands make time-telling difficult, and hands can disappear against the dial. The COSC-certified movement averages +2.3 seconds per day, and the bracelet clasp is noted for comfort. The moonphase complication itself is reported by one owner to be inaccurate despite manufacturer attempts to correct it, though other users view such complications as primarily decorative. The 38-hour power reserve is considered short. Overall, owners rate the Christopher Ward C1 Moonphase 37 highly for its striking aventurine dial and moon focus, despite challenges with legibility and the practical accuracy of its moonphase complication.

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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