Side by side
Borealis Watch Co. Estoril 300 GMTvsSheffield 1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Estoril 300 GMT41.50mm
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date40mm
Power Reserve
Estoril 300 GMT40h
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date—
Water Resistance
Estoril 300 GMT300m
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date200m
MSRP
Estoril 300 GMT$600
1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no date$238
Full specifications
Case
5 specsDiameter
41.50mm
40mm
Thickness
13.5mm
12.8mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
20mm
Water Resistance
300m
200m
Crystal & Dial
2 specsDial Color
Black
White/Blue
Lume
BGW9
Swiss blue lume
Movement
2 specsCaliber
Miyota 9075
Seiko NH35A
Power Reserve
40h
—
Pricing
1 specsMSRP
$600
$238
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