Side by side

CWC SBS Black Ice Quartz WatchvsSeiko 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.

SBS Black Ice Quartz Watch
CWCSBS Black Ice Quartz Watch
MSRP $666
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

CWC SBS Black Ice Quartz Watch

Owners widely praise the CWC SBS Black Ice Quartz Watch for its legible, uncluttered dial, excellent Super-LumiNova lume, and robust build quality, noting its comfortable 12mm thickness and durable PVD coating. The bezel action is described as having zero back play, and the fixed lugs are appreciated for easy strap changes. One owner reported the lume is readable throughout the night, while another flagged a faulty mechanism requiring replacement and poor retailer customer service. The £700 price is considered high by some compared to similar quartz divers, leading to questions about its value. Overall, owners rate the CWC SBS Black Ice Quartz Watch highly for its bombproof, toolish design and practical aesthetics.

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.

At a glance

13 of 29 specs differ
Diameter
SBS Black Ice Quartz Watch40mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
SBS Black Ice Quartz Watch40h
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
SBS Black Ice Quartz Watch300m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
SBS Black Ice Quartz Watch$666
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

4 specs
Diameter
40mm
44mm
Thickness
12mm
13mm
Lug-to-Lug
46mm
49.3mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
CWC SBS Black Ice Quartz Watch
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Ronda 517
8L35
Type
Quartz
Automatic
Power Reserve
40h
50h
Jewels
25
26

Pricing

1 specs
MSRP
$666
$3,300
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