Side by side

Christopher Ward C65 Dune AeolianvsSeiko Prospex Sea

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
Prospex Sea
SeikoProspex Sea
MSRP $900

At a glance

17 of 29 specs differ
Diameter
C65 Dune Aeolian43.6mm
Prospex Sea41mm
Power Reserve
C65 Dune Aeolian38h
Prospex Sea70h
Water Resistance
C65 Dune Aeolian150m
Prospex Sea200m
MSRP
C65 Dune Aeolian$1,335
Prospex Sea$900

Full specifications

Case

7 specs
Category
Diver
Diameter
43.6mm
41mm
Thickness
11.7mm
12.3mm
Lug-to-Lug
43.6mm
46.9mm
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

5 specs
Caliber
SW200
6R35
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
70h
Jewels
26
24
Complications
Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,335
$900

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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

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

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