Side by side

Borealis Watch Co. Estoril 300 GMTvsFormex Reef 39.5 mm

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
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

9 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Reef 39.5 mm39.5mm
Power Reserve
Estoril 300 GMT40h
Reef 39.5 mm56h
Water Resistance
Estoril 300 GMT300m
Reef 39.5 mm300m
MSRP
Estoril 300 GMT$600
Reef 39.5 mm$2,230

Full specifications

Case

4 specs
Diameter
41.50mm
39.5mm
Thickness
13.5mm
11mm
Lug-to-Lug
47mm
45.5mm
Lug Width
20mm
22mm

Crystal & Dial

2 specs
Dial Color
Black
Bahama Blue
Lume
BGW9
Super-LumiNova

Movement

2 specs
Caliber
Miyota 9075
Sellita SW300-1
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$600
$2,230

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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.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

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