Side by side

Christopher Ward C65 Aquitaine Bronze COSCvsSeiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

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

At a glance

17 of 29 specs differ
Diameter
C65 Aquitaine Bronze COSC46.68mm
Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition42mm
Power Reserve
C65 Aquitaine Bronze COSC38h
Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition72h
Water Resistance
C65 Aquitaine Bronze COSC200m
Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition300m
MSRP
C65 Aquitaine Bronze COSC$1,695
Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition$1,750

Full specifications

Case

8 specs
Diameter
46.68mm
42mm
Thickness
12.45mm
13.3mm
Lug-to-Lug
46.68mm
48.6mm
Lug Width
22mm
20mm
Material
Bronze
Stainless Steel
Finish
Brushed + Polished
Brushed and polished
Water Resistance
200m
300m
Caseback
Display
Solid

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
SLN X1 BL Old Radium
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
SW200
6R54
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
72h
Jewels
26
24
Complications
Moonphase, Day-date, Date
None

Pricing

1 specs
MSRP
$1,695
$1,750

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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 Aquitaine Bronze COSC

Owners widely praise the Christopher Ward C65 Aquitaine Bronze COSC for its comfortable wearability, durable case and bezel, and smooth winding action, with one owner finding its case superior to a Tudor's. However, accuracy is a significant concern, with one owner reporting +17 seconds per day. The rubber strap is also noted as lacking refinement, and some suggest design tweaks for greater brand uniqueness. Overall, owners rate the Christopher Ward C65 Aquitaine Bronze COSC highly for its wearability and case finishing, despite accuracy concerns with the Sellita SW330-2 movement.

Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

The Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition features a 40mm case, 300m water resistance, and a 72-hour power reserve from the Calibre 6R55 movement, with a new grey bezel insert and a wave-patterned silvery-white dial. Owners find the watch attractive and the large case wears well without feeling bulky. However, some consider the price of €1900 for a 6R54 movement with an accuracy of +25/-15 seconds per day to be too high, and the production run of 6000 units is not seen as a true limited edition. Overall, owners find the Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition aesthetically pleasing with good wearability, but express concerns regarding its value proposition and movement accuracy for the price.

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