Side by side

Christopher Ward The C12 LocovsSeiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

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

At a glance

17 of 29 specs differ
Diameter
The C12 Loco47.5mm
Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition42.7mm
Power Reserve
The C12 Loco144h
Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition70h
Water Resistance
The C12 Loco30m
Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition200m
MSRP
The C12 Loco$5,460
Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition$1,350

Full specifications

Case

7 specs
Category
Diver
Diameter
47.5mm
42.7mm
Thickness
13.7mm
13.2mm
Lug-to-Lug
47.5mm
46.4mm
Lug Width
25mm
20mm
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
30m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
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
6R35
Beat Rate
4 vph
28,800 vph
Power Reserve
144h
70h
Jewels
29
24
Complications
Moonphase, Day-date, Date
None

Pricing

1 specs
MSRP
$5,460
$1,350

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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 1970 Heritage Diver's Save the Ocean Special Edition

The Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition is praised for its beautiful design and refinement over previous models, featuring vertically textured glacier-inspired dials. Owners, however, consider the €1500 RRP too high, suggesting a price closer to €900-€1000, noting the aluminum bezel insert instead of ceramic. Some owners report the 6R movement runs slow. On balance, owners find the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition beautiful and a refinement, but the price and aluminum bezel are points of contention.

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