Side by side

Borealis Watch Co. Estoril 300 GMTvsFormex Reef GMT

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 GMT
FormexReef GMT
MSRP $2,235

At a glance

9 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Reef GMT42mm
Power Reserve
Estoril 300 GMT40h
Reef GMT56h
Water Resistance
Estoril 300 GMT300m
Reef GMT300m
MSRP
Estoril 300 GMT$600
Reef GMT$2,235

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
41.50mm
42mm
Thickness
13.5mm
11.4mm
Lug-to-Lug
47mm
47mm
Lug Width
20mm
22mm

Crystal & Dial

1 specs
Lume
BGW9
Super-LumiNova

Movement

2 specs
Caliber
Miyota 9075
Sellita SW330-2
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$600
$2,235

Follow this matchup

Get a note when Borealis Watch Co. Estoril 300 GMT vs Formex Reef GMT gets more votes, a community discussion, or a price drop. No account needed.

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 GMT

The Formex Reef GMT is widely praised for its unique porthole case shape, COSC-certified Sellita SW330-2 movement with good finishing, and comfortable quick-release bracelet with on-the-fly micro-adjustment. Reviewers note its robust construction, impressive specifications, and strong value proposition, with a slim 11.4mm profile accommodating 300m water resistance and an exhibition caseback. However, owners widely report the 53mm lug-to-lug span with male endlinks makes it too large for smaller wrists. Some find the bezel action stiff and potentially slippery, and a reviewer desired sharper finishing and edges, deeming the aesthetic too modernist. The GMT variant sacrifices a timing bezel unless swapped, and one owner notes sharp edges on the crown and crown guard. Overall, owners and reviewers highly rate the Formex Reef GMT for its exceptional value and well-executed features, particularly its bracelet system and COSC-certified movement.

From video reviewers

The watch features a COSC-certified SW330-2 GMT movement, which is visible through a sapphire crystal display case back and beautifully decorated. The watch's water-resistance of up to 300m/1000ft is a notable feature. The 42mm diameter may be too large for smaller wrists.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.