Side by side

Borealis Watch Co. Estoril 300 GMTvsCWC SBS Divers Issue Quartz Watch Mk.2 Day/Date

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 Divers Issue Quartz Watch Mk.2 Day/Date
CWCSBS Divers Issue Quartz Watch Mk.2 Day/Date
MSRP $624

At a glance

9 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
SBS Divers Issue Quartz Watch Mk.2 Day/Date41mm
Power Reserve
Estoril 300 GMT40h
SBS Divers Issue Quartz Watch Mk.2 Day/Date40h
Water Resistance
Estoril 300 GMT300m
SBS Divers Issue Quartz Watch Mk.2 Day/Date300m
MSRP
Estoril 300 GMT$600
SBS Divers Issue Quartz Watch Mk.2 Day/Date$624

Full specifications

Case

4 specs
Diameter
41.50mm
41mm
Thickness
13.5mm
12mm
Lug-to-Lug
47mm
47mm
Lug Width
20mm
20mm

Crystal & Dial

2 specs
Dial Color
Black
CWC SBS Divers Issue Quartz Watch Mk.2 Day/Date, Black (SF300 QS120-DD)
Lume
BGW9
Super-LumiNova

Movement

2 specs
Caliber
Miyota 9075
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$600
$624

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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 Divers Issue Quartz Watch Mk.2 Day/Date

The CWC SBS Divers Issue Quartz Watch Mk.2 Day/Date is widely praised for its exceptional legibility, particularly its dial design and thickly applied Super-LumiNova that remains readable all night. Owners appreciate its robust, toolish, bombproof design and comfortable wearability, with one noting its 11mm thickness and smaller wear size. The PVD finish withstands significant abuse. The Ronda movement is considered to have consistent second-hand movement. Some find its £700 price steep, especially compared to less expensive quartz divers, and fixed spring bars are noted as a drawback. Customer service is also flagged as potentially lacking by some. Overall, owners and reviewers rate the CWC SBS Divers Issue Quartz Watch Mk.2 Day/Date highly for its military aesthetics, legibility, and robust, comfortable tool-watch build.

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