Side by side

Christopher Ward The C12 LocovsSeiko Prospex Sea

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

The C12 Loco
Christopher WardThe C12 Loco
MSRP $5,460
Prospex Sea
SeikoProspex Sea
MSRP $1,100

At a glance

16 of 29 specs differ
Diameter
The C12 Loco47.5mm
Prospex Sea41.3mm
Power Reserve
The C12 Loco144h
Prospex Sea72h
Water Resistance
The C12 Loco30m
Prospex Sea300m
MSRP
The C12 Loco$5,460
Prospex Sea$1,100

Full specifications

Case

7 specs
Category
Diver
Diameter
47.5mm
41.3mm
Thickness
13.7mm
12.5mm
Lug-to-Lug
47.5mm
48.2mm
Lug Width
25mm
20mm
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
30m
300m

Crystal & Dial

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

Movement

5 specs
Caliber
CW-003
6R55
Beat Rate
4 vph
28,800 vph
Power Reserve
144h
72h
Jewels
29
24
Complications
Moonphase, Day-date, Date
None

Pricing

1 specs
MSRP
$5,460
$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 The C12 Loco

Owners widely praise the Christopher Ward The C12 Loco for its unusual technical ambition, well-finished movement aesthetics, and value, particularly noting the dial-side floating free-sprung balance. Some owners find the mid-case design creates odd proportions, and the 30m water resistance is flagged as a limitation. The watch features a manually wound twin-barrel movement in a 41mm steel case with a 47.5mm lug-to-lug and 13.7mm thickness. Overall, owners rate the Christopher Ward The C12 Loco highly for its ambitious movement design and value 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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