Side by side

Borealis Watch Co. Estoril 300 GMTvsSternglas Naos Pro GMT 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
Naos Pro GMT Automatik
SternglasNaos Pro GMT Automatik
MSRP $863

At a glance

11 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Naos Pro GMT Automatik38mm
Power Reserve
Estoril 300 GMT40h
Naos Pro GMT Automatik42h
Water Resistance
Estoril 300 GMT300m
Naos Pro GMT Automatik50m
MSRP
Estoril 300 GMT$600
Naos Pro GMT Automatik$863

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
41.50mm
38mm
Thickness
13.5mm
11mm
Lug-to-Lug
47mm
42mm
Lug Width
20mm
20mm
Water Resistance
300m
50m

Crystal & Dial

2 specs
Dial Color
Black
Lume
BGW9
Luminova Punkte

Movement

2 specs
Power Reserve
40h
42h
Jewels
25

Pricing

1 specs
MSRP
$600
$863

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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 Naos Pro GMT Automatik

Owners report the Sternglas Naos can feel underwhelming with a cheap feel and hands resembling office printer output, with some finding it wears smaller than expected and looks like a toy, though others appreciate its understated design. Reviewers highlight the Argo Automatic variant as a compelling sub-€400 mechanical watch with a colorful dial and practical date wheel, suitable for new collectors, featuring a 38mm case and a Miyota 8215 movement. On balance, the consensus is that the Sternglas Naos offers a mixed ownership experience, with its value proposition and entry-level appeal being its strongest points for some.

From video reviewers

The Sternglas Naos Pro GMT Automatik features a clean Bauhaus design that sets it apart from other GMT watches. A notable weakness is the watch's bezel action, which is not as smooth as some reviewers would have liked. Reviewers disagree on the watch's case size, with one reviewer stating it's slightly larger than the original Naos Automatic, while another reviewer doesn't mention this aspect at all.

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