Side by side

Borealis Watch Co. Estoril 300 GMTvsHamilton Jazzmaster Gent Quartz

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
Jazzmaster Gent Quartz
HamiltonJazzmaster Gent Quartz
MSRP $745

At a glance

11 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Jazzmaster Gent Quartz40mm
Power Reserve
Estoril 300 GMT40h
Jazzmaster Gent Quartz40h
Water Resistance
Estoril 300 GMT300m
Jazzmaster Gent Quartz50m
MSRP
Estoril 300 GMT$600
Jazzmaster Gent Quartz$745

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
41.50mm
40mm
Thickness
13.5mm
10.2mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
20mm
Water Resistance
300m
50m

Crystal & Dial

2 specs
Dial Color
Black
Blue
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9075
F06.111
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$600
$745

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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.

Hamilton Jazzmaster Gent Quartz

Owners widely praise the Hamilton Jazzmaster Gent Quartz for its dressier, unique aesthetic, with specific admiration for the dark, iridescent dial and the machine-work on the minute markers. The 40mm size is considered suitable for smaller wrists, though lug-to-lug measurements are debated. Some owners find the open-heart dial busy and difficult to read due to silver lines resembling hands, and the skeleton version is also noted for excessive branding. The H-20-S movement in the skeleton model is thought to have a 42-hour power reserve. Overall, owners appreciate the Hamilton Jazzmaster Gent Quartz for its distinctive mid-century modern design and detailed finishing.

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