Side by side

CWC E9 Quartz Diver WatchvsSeiko Prospex Sea 1968 Heritage Diver's GMT Watch

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

E9 Quartz Diver Watch
CWCE9 Quartz Diver Watch
MSRP $749

At a glance

11 of 29 specs differ
Diameter
E9 Quartz Diver Watch41mm
Prospex Sea 1968 Heritage Diver's GMT Watch42mm
Power Reserve
E9 Quartz Diver Watch40h
Prospex Sea 1968 Heritage Diver's GMT Watch72h
Water Resistance
E9 Quartz Diver Watch300m
Prospex Sea 1968 Heritage Diver's GMT Watch300m
MSRP
E9 Quartz Diver Watch$749
Prospex Sea 1968 Heritage Diver's GMT Watch$1,700

Full specifications

Case

3 specs
Diameter
41mm
42mm
Thickness
12mm
13.3mm
Lug-to-Lug
47mm
48.6mm

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
CWC E9 Quartz Diver Watch (E9 QS120)
Black
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
6R54
Type
Quartz
Automatic
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$749
$1,700

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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.

CWC E9 Quartz Diver Watch

The CWC E9 Quartz Diver Watch is praised for its historical significance, unique Jolly Roger dial, and military-spec build. Owners report it is thin, small, very legible, and has a satisfyingly easy-to-wind crown, with some noting its accuracy and clean lume application. However, the luminous paint on the Jolly Roger is described as low glow, and one owner reported their T20 model had an inaccurate quartz movement and a soft acrylic crystal that scratches easily. Some find the Jolly Roger design "out there," while others like its unique aesthetic. Some feel it is overpriced for its components, particularly the standard Ronda movement. Overall, owners rate the CWC E9 Quartz Diver Watch highly for its unique aesthetic and military-inspired build.

Seiko Prospex Sea 1968 Heritage Diver's GMT Watch

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch offers a 300-meter depth rating and a caller-style GMT complication powered by the Caliber 6R54 movement, which provides a 72-hour power reserve. Reviewers note its refined clasp with extensive micro-adjustment. However, the movement's accuracy, ranging from +25 to -15 seconds per day, is considered a drawback by some. Overall, reviewers highlight the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch as a good reminder of Seiko's value, despite the wide accuracy range of its movement.

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