Side by side

Borealis Watch Co. Estoril 300 GMTvsSternglas Hamburg Pro Automatik

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
Hamburg Pro Automatik
SternglasHamburg Pro Automatik
MSRP $755

At a glance

12 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Hamburg Pro Automatik42mm
Power Reserve
Estoril 300 GMT40h
Hamburg Pro Automatik42h
Water Resistance
Estoril 300 GMT300m
Hamburg Pro Automatik50m
MSRP
Estoril 300 GMT$600
Hamburg Pro Automatik$755

Full specifications

Case

6 specs
Category
Diver
Sport
Diameter
41.50mm
42mm
Thickness
13.5mm
12mm
Lug-to-Lug
47mm
45mm
Lug Width
20mm
20mm
Water Resistance
300m
50m

Crystal & Dial

2 specs
Dial Color
Black
Lume
BGW9
Luminova Indizes

Movement

3 specs
Caliber
Miyota 9075
Miyota 8215
Power Reserve
40h
42h
Jewels
25

Pricing

1 specs
MSRP
$600
$755

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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.

Sternglas Hamburg Pro Automatik

Owners widely praise the Sternglas Hamburg Pro Automatik for its Bauhaus-inspired design, German assembly, and excellent value, with many appreciating its comfortable wearability and uncluttered dial. Specific positive notes include a substantial weight that feels good on the wrist and a pleasing matte dial texture. The Miyota 8215 movement is generally considered reliable and surprisingly accurate, though some owners find it louder than expected and note the lack of hacking seconds. Caveats include a minimal instruction manual, an initially stiff strap, and a date window recess that can make the date difficult to see. Owners are split on the case finishing, with some finding it not too bad and nicely polished, while others criticize it. The case is also described by some as thick, making it potentially awkward for long-sleeved shirts. On balance, owners and reviewers rate the Sternglas Hamburg Pro Automatik highly for its attractive Bauhaus design and strong value proposition.

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