Side by side

Borealis Watch Co. Estoril 300 GMTvsCWC SBS Black Ice Quartz Watch

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

Estoril 300 GMT
Borealis Watch Co.Estoril 300 GMT
MSRP $600
SBS Black Ice Quartz Watch
CWCSBS Black Ice Quartz Watch
MSRP $666

At a glance

10 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
SBS Black Ice Quartz Watch40mm
Power Reserve
Estoril 300 GMT40h
SBS Black Ice Quartz Watch40h
Water Resistance
Estoril 300 GMT300m
SBS Black Ice Quartz Watch300m
MSRP
Estoril 300 GMT$600
SBS Black Ice Quartz Watch$666

Full specifications

Case

4 specs
Diameter
41.50mm
40mm
Thickness
13.5mm
12mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
20mm

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Black
CWC SBS Black Ice Quartz Watch
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9075
Ronda 517
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$600
$666

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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.

Borealis Watch Co. Estoril 300 GMT

Owners widely praise the Borealis Watch Co. Estoril 300 GMT for its excellent value, robust build quality, and crisp dial, with reviewers highlighting its exceptionally bright BGW9 lume and dive-ready ceramic bezel. Some owners appreciate the brushed and polished finishes, though one owner noted a desire for a white-painted second hand. The included NATO strap is considered too thick with a loose weave, and the sapphire bezel insert is seen by some as a minor aesthetic departure from its inspirations. Overall, owners rate the Borealis Watch Co. Estoril 300 GMT highly for its impressive build quality and value.

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.

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