Side by side

Christopher Ward C65 Dune AeolianvsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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

C65 Dune Aeolian
Christopher WardC65 Dune Aeolian
MSRP $1,335

At a glance

16 of 29 specs differ
Diameter
C65 Dune Aeolian43.6mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
C65 Dune Aeolian38h
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
C65 Dune Aeolian150m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
C65 Dune Aeolian$1,335
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

7 specs
Category
Diver
Diameter
43.6mm
44mm
Thickness
11.7mm
13mm
Lug-to-Lug
43.6mm
49.3mm
Finish
Brushed + Polished
Brushed and polished
Water Resistance
150m
200m
Caseback
Display
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
SLN BL Grade X1
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
SW200
8L35
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
50h
Complications
Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,335
$3,300

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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 C65 Dune Aeolian

The Christopher Ward C65 Dune Aeolian is widely praised for its improved textured dials, offering depth and a departure from common finishes, with owners specifically noting the stunning sandy texture and wavy dial designs. Its 38mm case is consistently highlighted for its comfortable wearability and neat proportions, featuring satin-finished steel and a compact lug-to-lug. The watch is also recognized for its excellent value, solid finishing, and practical features like 150m water resistance and a screw-down crown. Some owners report impressive accuracy, with one noting a COSC-certified movement gained only 4 seconds in five days, while another states accuracy is rated up to 20 seconds per day. The bronze case variant develops a natural, characterful patina. A short 38-hour power reserve is noted as a drawback, and some find the grey dial blends too much with the case or that the logo is abstract.

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition for its attractive, well-made design and gorgeous dial, noting its jewel-toned teal color and rippling-water pattern. The bezel action is smooth with a muted sound, and the case and bracelet offer a more comfortable feel than previous iterations. However, multiple owners express disappointment with the accuracy of the 6R movement at its price point, with some noting theirs runs slow, and consider the price too high. The steep rehaut and marker size make the 24-hour numbers difficult to read, and some find the case design makes the watch feel top-heavy despite wearing smaller. Overall, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition highly for its striking dial and refined case design, despite concerns regarding movement accuracy at its price.

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