Side by side

Christopher Ward Twelve X Black ShadowvsSeiko Prospex Sea

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

Twelve X Black Shadow
Christopher WardTwelve X Black Shadow
MSRP $5,715
Prospex Sea
SeikoProspex Sea
MSRP $1,100

At a glance

15 of 29 specs differ
Diameter
Twelve X Black Shadow44.5mm
Prospex Sea41.3mm
Power Reserve
Twelve X Black Shadow120h
Prospex Sea72h
Water Resistance
Twelve X Black Shadow100m
Prospex Sea300m
MSRP
Twelve X Black Shadow$5,715
Prospex Sea$1,100

Full specifications

Case

7 specs
Category
Skeleton
Diver
Diameter
44.5mm
41.3mm
Thickness
12.3mm
12.5mm
Lug-to-Lug
44.5mm
48.2mm
Lug Width
25mm
20mm
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
100m
300m

Crystal & Dial

2 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
CW-001
6R55
Beat Rate
4 vph
28,800 vph
Power Reserve
120h
72h
Jewels
31
24
Complications
Moonphase
None

Pricing

1 specs
MSRP
$5,715
$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 Twelve X Black Shadow

Owners and reviewers widely praise the Christopher Ward Twelve X Black Shadow for its exceptional titanium finishing, dynamic case design, and skeletonized COSC-certified SH21 movement with a 120-hour power reserve. Some owners note sharp edges on bracelet links and unfinished interior clasp surfaces, while reviewers mention legibility issues common to skeletonized watches and a thickness of 12.3mm making it feel chunkier than other models. On balance, owners and reviewers rate the Christopher Ward Twelve X Black Shadow highly for its impressive in-house movement and titanium finishing at its 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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