Side by side

Borealis Watch Co. Estoril 300 GMTvsBaltic Hermétique Tourer Bronze

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
Hermétique Tourer Bronze
BalticHermétique Tourer Bronze
MSRP $648

At a glance

12 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Hermétique Tourer Bronze37mm
Power Reserve
Estoril 300 GMT40h
Hermétique Tourer Bronze42h
Water Resistance
Estoril 300 GMT300m
Hermétique Tourer Bronze150m
MSRP
Estoril 300 GMT$600
Hermétique Tourer Bronze$648

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
41.50mm
37mm
Thickness
13.5mm
10mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
20mm
Material
Stainless Steel
Bronze
Water Resistance
300m
150m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Black
Blue

Movement

2 specs
Caliber
Miyota 9075
Miyota 9039
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$600
$648

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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.

Baltic Hermétique Tourer Bronze

The Baltic Hermétique Tourer Bronze is widely praised for its vintage-inspired aesthetic, featuring a bronze case and a smoked dial that develops a unique patina. Owners and reviewers highlight its comfortable wearability, noting the slim case profile and manageable lug-to-lug distance. The watch offers 150 meters of water resistance, supported by a recessed crown that contributes to its silhouette, though some find it tricky to grip. It is powered by the Miyota 9039 movement, which provides a 42-hour power reserve and a smooth seconds hand sweep, with accuracy reported between -10/+30 seconds per day. Overall, the Baltic Hermétique Tourer Bronze is highly regarded for its attractive design and comfortable wearability at its price point.

From video reviewers

The watch's slim profile and comfortable fit are consistently praised. Reviewers note the bronze case develops a unique patina. No shared weaknesses were identified.

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