Side by side

Borealis Watch Co. Estoril 300 GMTvsTissot Seastar 1000 Quartz Chronograph

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
Seastar 1000 Quartz Chronograph
TissotSeastar 1000 Quartz Chronograph
MSRP $650

At a glance

11 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Seastar 1000 Quartz Chronograph38mm
Power Reserve
Estoril 300 GMT40h
Seastar 1000 Quartz Chronograph40h
Water Resistance
Estoril 300 GMT300m
Seastar 1000 Quartz Chronograph300m
MSRP
Estoril 300 GMT$600
Seastar 1000 Quartz Chronograph$650

Full specifications

Case

4 specs
Diameter
41.50mm
38mm
Thickness
13.5mm
12.95mm
Lug-to-Lug
47mm
38mm
Lug Width
20mm
18mm

Crystal & Dial

4 specs
AR Coating
Inner
Yes
Dial Color
Black
Graded turquoise
Indices
Applied
Indexes
Lume
BGW9
Super-LumiNova ®

Movement

2 specs
Caliber
Miyota 9075
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$600
$650

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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.

Tissot Seastar 1000 Quartz Chronograph

The Tissot Seastar 1000 Quartz Chronograph is widely praised for its excellent value, solid build, and 300m water resistance, making it a capable summer watch. Owners appreciate its comfortable size, with one noting the 40mm variant as a "just right" fit, and others highlighting the attractive mineral bezels and throwback aesthetics of certain colorways. The watch features adequate lume on the dial and hands, with a green lume pip on the bezel, and a screw-down crown with decent grip. However, some criticisms have been raised. Reviewers and owners note a non-reflective crystal that can cause glare, mediocre lume in general, and excessive polishing on the case. The bracelet and clasp are frequently described as rattly and flimsy, with one owner finding the 19mm lug width too thin. There are also comments about a busy dial, ill-proportioned hands and indices, and a bezel that can be hard to read in certain light.

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