Side by side

Borealis Watch Co. Estoril 300 GMTvsFortis Marinemaster M-40

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
Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520

At a glance

10 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Marinemaster M-4040mm
Power Reserve
Estoril 300 GMT40h
Marinemaster M-4038h
Water Resistance
Estoril 300 GMT300m
Marinemaster M-40300m
MSRP
Estoril 300 GMT$600
Marinemaster M-40$3,520

Full specifications

Case

4 specs
Diameter
41.50mm
40mm
Thickness
13.5mm
13mm
Lug-to-Lug
47mm
Lug Width
20mm
21mm

Crystal & Dial

2 specs
Dial Color
Black
Orange
Lume
BGW9
None

Movement

3 specs
Caliber
Miyota 9075
Sellita SW220-1
Power Reserve
40h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$600
$3,520

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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.

Fortis Marinemaster M-40

Owners praise the Fortis Amber Orange for its gorgeous appearance and strong wrist presence, noting its crazy lume and 70-hour power reserve. The Doxa SUB 300T, described as having a superb, eccentric design with a highly legible dial and functional no-decompression bezel, uses an ETA 2824-2 movement. However, the SUB 300T's 42.5mm case wears large and its 14mm thickness is not ideal for dress shirts, though it boasts 1,200m water resistance. On balance, owners appreciate the Fortis Amber Orange for its striking aesthetics and impressive lume.

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