Side by side

Christopher Ward C1 MoonglowvsSeiko Prospex Sea

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

C1 Moonglow
Christopher WardC1 Moonglow
MSRP $2,850
Prospex Sea
SeikoProspex Sea
MSRP $1,100

At a glance

14 of 29 specs differ
Diameter
C1 Moonglow47.9mm
Prospex Sea41.3mm
Power Reserve
C1 Moonglow38h
Prospex Sea72h
Water Resistance
C1 Moonglow30m
Prospex Sea300m
MSRP
C1 Moonglow$2,850
Prospex Sea$1,100

Full specifications

Case

6 specs
Category
Diver
Diameter
47.9mm
41.3mm
Thickness
12.9mm
12.5mm
Lug-to-Lug
47.9mm
48.2mm
Finish
Brushed + Polished
Brushed and polished
Water Resistance
30m
300m

Crystal & Dial

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

Movement

5 specs
Caliber
SW220
6R55
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
72h
Jewels
26
24
Complications
Moonphase, Day-date
None

Pricing

1 specs
MSRP
$2,850
$1,100

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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 Moonglow

Owners widely praise the Christopher Ward C1 Moonglow for its gorgeous, avant-garde moonphase display and impressive lume, with many finding it comfortable and well-wearing. The constantly rotating moon phase complication is a highlight, and its accuracy is noted as exceptional. However, some find the lume on the date ring disappointing, fading quickly, and one owner finds the second, less visible moon distracting. Overall, owners rate the Christopher Ward C1 Moonglow highly for its visually engaging moonphase and value at the price point.

Seiko Prospex Sea

Seiko Prospex Sea models are widely praised for their excellent build quality, value for money, and comfortable wearability, with many appreciating the vintage-inspired designs and robust construction. Owners note the silicone straps are surprisingly comfortable and well-finished, and the Lumibrite lume is excellent. However, some find the 44.3mm size and thickness too large for smaller wrists, though others report the sizing as perfect. The 6R15 movement in some variants offers accuracy around +4 seconds per day with a 50-hour power reserve, while newer movements offer more. Some models are criticized for a bracelet width not matching the case size or a rudimentary clasp for their price point. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its impressive case work and finishing at its price point.

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