Borealis Watch Co. Estoril 300 GMTvsYema Diver

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Borealis Watch Co. Estoril 300 GMT at true scale

Estoril 300 GMT

Yema Diver at true scale

Diver

Diameter

41.5mm

39.5mm

Lug-to-Lug

47mm

n/a

Thickness

13.5mm

10.9mm

lowest

Water Resistance

300m

highest

200m

MSRP

$600

lowest

$990

Movement

Miyota 9075

Sellita SW200-1

Case

5 specs
Diameter
41.5mm
39.5mm
Thickness
13.5mm
10.95mm
Lug-to-Lug
47mm
n/a
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
n/a
Black
Lume
BGW9
None

Movement

1 specs
Caliber
Miyota 9075
Sellita SW200-1

Pricing

1 specs
MSRP
$600
$990
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Reviews

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 and robust build quality, featuring crisp dial details and exceptionally bright BGW9 lume. Some owners note the bezel insert's sapphire construction as an aesthetic departure from its inspiration, and one owner wishes for a white-painted second hand. The Borealis Watch Co. Estoril 300 GMT is described as dive-ready with a ceramic bezel and homage design. Overall, owners rate the Borealis Watch Co. Estoril 300 GMT highly for its impressive build quality and value at the price point.

Yema Diver

One owner reported a water ingress issue on their Yema Diver the first time it got wet in a lake, despite rinsing and inspecting the watch and bezel. Another owner noted that this manual wind Yema Diver, while featuring a cool patina, is unlikely to be waterproof or gain value, positioning it as a fun second watch rather than an investment. Overall, owners view the Yema Diver as a fun second watch rather than an investment, with one owner experiencing a water ingress issue.

From video reviewers

The Swiss Sellita movement is a notable feature. Reviewers did not reach a consensus on any weaknesses.

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