Side by side

CWC SBS Black Ice Quartz WatchvsSeiko Prospex Sea

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
Prospex Sea
SeikoProspex Sea
MSRP $595

At a glance

13 of 29 specs differ
Diameter
SBS Black Ice Quartz Watch40mm
Prospex Sea41.7mm
Power Reserve
SBS Black Ice Quartz Watch40h
Prospex Sea41h
Water Resistance
SBS Black Ice Quartz Watch300m
Prospex Sea200m
MSRP
SBS Black Ice Quartz Watch$666
Prospex Sea$595

Full specifications

Case

4 specs
Diameter
40mm
41.7mm
Thickness
12mm
12.3mm
Lug-to-Lug
46mm
49.5mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
AR Coating
Yes
Inner
Dial Color
CWC SBS Black Ice Quartz Watch
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Ronda 517
4R35
Type
Quartz
Automatic
Power Reserve
40h
41h
Jewels
25
23

Pricing

1 specs
MSRP
$666
$595

Follow this matchup

Get a note when CWC SBS Black Ice Quartz Watch vs Seiko Prospex Sea gets more votes, a community discussion, or a price drop. No account needed.

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

Owners and reviewers widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many noting its comfortable wearability and faithful design recreations. Some owners report the watch can feel big, thick, and heavy on smaller wrists, while others find the sizing perfect. The bezel action is frequently highlighted as smooth and precise, often exceeding that of less expensive models. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its impressive finishing and value proposition.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.