Side by side

Borealis Watch Co. Estoril 300 GMTvsZelos Thresher 44

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
Thresher 44
ZelosThresher 44
MSRP $549

At a glance

11 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Thresher 4444mm
Power Reserve
Estoril 300 GMT40h
Thresher 4440h
Water Resistance
Estoril 300 GMT300m
Thresher 44500m
MSRP
Estoril 300 GMT$600
Thresher 44$549

Full specifications

Case

6 specs
Diameter
41.50mm
44mm
Thickness
13.5mm
12.8mm
Lug-to-Lug
47mm
44mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
500m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
Grey
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9075
Miyota 9015

Pricing

1 specs
MSRP
$600
$549

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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.

Zelos Thresher 44

Owners widely praise the Zelos Thresher 44, with one owner noting its finish has proven remarkably scratch-resistant. However, one owner found the finishing on their hammered grey variant not as well done as expected. The Zelos Thresher 44 with an agate dial sold out in 90 seconds, with one owner receiving theirs and noting the bracelet was fully wrapped. Overall, owners rate the Zelos Thresher 44 highly for its desirability and scratch-resistant finish.

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