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 $1,415
Prospex Sea
SeikoProspex Sea
MSRP $900

At a glance

16 of 29 specs differ
Diameter
C65 Dune Aeolian40mm
Prospex Sea41mm
Power Reserve
C65 Dune Aeolian38h
Prospex Sea70h
Water Resistance
C65 Dune Aeolian150m
Prospex Sea200m
MSRP
C65 Dune Aeolian$1,415
Prospex Sea$900

Full specifications

Case

6 specs
Category
Diver
Diameter
40mm
41mm
Thickness
11.7mm
12.3mm
Lug-to-Lug
43.6mm
46.9mm
Material
Bronze
Stainless Steel
Water Resistance
150m
200m

Crystal & Dial

5 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Brown
Black
Indices
Roman numerals
Applied
Lume
SLN Light Old Radium BL Grade X1
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
SW200-1
6R35
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
70h
Jewels
26
24

Pricing

1 specs
MSRP
$1,415
$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 unique, textured dial and comfortable 38mm case size, with reviewers noting its excellent finishing for the price and the Bader bracelet as a standout feature. Owners appreciate the clean, date-free dial and the wavy pattern, with one comparing it favorably to Grand Seiko. The bronze variant develops a warm patina over time. Accuracy is reported as COSC-certified and around +4 seconds per day by one owner, while another notes a rating of up to 20 seconds per day. The time-only models feature a Sellita SW200-1 movement with a 38-hour power reserve, though the GMT variant uses a Sellita SW330 with a 56-hour power reserve. Some owners expressed concerns about the sandy texture becoming tiresome or the grey dial blending with the case, and one reviewer found the dial details and applied logo "a bit much." Customer service experiences were mixed, with one owner reporting a frustrating battle and long repair turnaround.

From video reviewers

The watch's unique textured dial is a notable strength, giving it an organic design that sets it apart from other field watches. A weakness is the somewhat lacking lume performance, which may be a drawback for those who prioritize nighttime legibility. Reviewers disagree on the movement's power reserve, with some considering 38 hours sufficient and others finding it too short.

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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