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 $625
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

The Seiko Prospex Sea is widely praised for its excellent value, solid build quality, and comfortable wearability, with many models featuring impressive lume and attractive dials. Owners and reviewers highlight the modern upgrades on classic designs, such as drilled lugs and reliable movements with hacking and hand-winding capabilities. Some models are noted for their refined case finishing and scratch resistance. Accuracy figures vary, with one owner reporting approximately 4 seconds fast per day, while others find the movements offer good performance for the price. Concerns raised by owners and reviewers include clasps that can feel generic or cheap, and lug widths that some find disproportionate to the case size on certain models. The thickness and weight of some Prospex Sea watches are also noted as substantial. The GMT function on specific models is considered secondary and difficult to read for true travel purposes.

At a glance

15 of 29 specs differ
Diameter
Twelve X Black Shadow44.5mm
Prospex Sea43.8mm
Power Reserve
Twelve X Black Shadow120h
Prospex Sea41h
Water Resistance
Twelve X Black Shadow100m
Prospex Sea200m
MSRP
Twelve X Black Shadow$5,715
Prospex Sea$625

Full specifications

Case

7 specs
Category
Skeleton
Diver
Diameter
44.5mm
43.8mm
Thickness
12.3mm
12.8mm
Lug-to-Lug
44.5mm
48.7mm
Lug Width
25mm
22mm
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
100m
200m

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
4R35
Beat Rate
4 vph
28,800 vph
Power Reserve
120h
41h
Jewels
31
23
Complications
Moonphase
None

Pricing

1 specs
MSRP
$5,715
$625
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