Side by side

Borealis Watch Co. Estoril 300 GMTvsIslander Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291

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
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291
IslanderIslander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291
MSRP $499

At a glance

16 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-29137mm
Power Reserve
Estoril 300 GMT40h
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291
Water Resistance
Estoril 300 GMT300m
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291200m
MSRP
Estoril 300 GMT$600
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291$499

Full specifications

Case

7 specs
Diameter
41.50mm
37mm
Thickness
13.5mm
11.7mm
Lug-to-Lug
47mm
0mm
Lug Width
20mm
20mm
Finish
Brushed and polished
Water Resistance
300m
200m
Caseback
Solid
Screw-down

Crystal & Dial

4 specs
AR Coating
Inner
Underside
Dial Color
Black
Indices
Applied
Lume
BGW9
None

Movement

4 specs
Caliber
Miyota 9075
Miyota 90S5
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
0h
Jewels
25
0

Pricing

1 specs
MSRP
$600
$499

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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.

Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291

The Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291 is widely praised for its looks, build quality, and impressive specifications, including a high-beat Miyota 9015 movement with hacking and hand-winding, sapphire crystal, and 200m water resistance. Owners consider it excellent value, citing the finishing and comfortable fit. One owner notes the bright lume is fleeting. The watch is powered by a Miyota 9015 movement with a 40-hour power reserve. Overall, owners and reviewers rate the Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291 highly for its exceptional value and robust specifications at its price point.

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