Side by side

Borealis Watch Co. Estoril 300 GMTvsBremont Supermarine Chrono

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
Supermarine Chrono
BremontSupermarine Chrono
MSRP $6,850

At a glance

9 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Supermarine Chrono43mm
Power Reserve
Estoril 300 GMT40h
Supermarine Chrono40h
Water Resistance
Estoril 300 GMT300m
Supermarine Chrono300m
MSRP
Estoril 300 GMT$600
Supermarine Chrono$6,850

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
41.50mm
43mm
Thickness
13.5mm
15.87mm
Lug-to-Lug
47mm
Lug Width
20mm
22mm
Material
Stainless Steel
Stainless Steel (DLC coated)

Crystal & Dial

1 specs
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9075
BE-50AE

Pricing

1 specs
MSRP
$600
$6,850

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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.

Bremont Supermarine Chrono

The Bremont Supermarine Chrono's black dial and understated bezel markings allow it to transition effectively from rugged use to evening events. On balance, owners and reviewers find the Bremont Supermarine Chrono to be a handsome and functional watch, with its versatile dial design being a key strength.

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