Side by side
Borealis Watch Co. Estoril 300 GMTvsIslander Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
Estoril 300 GMT41.50mm
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-31140mm
Power Reserve
Estoril 300 GMT40h
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311—
Water Resistance
Estoril 300 GMT300m
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311200m
MSRP
Estoril 300 GMT$600
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311$399
Full specifications
Case
6 specsDiameter
41.50mm
40mm
Thickness
13.5mm
13.5mm
Lug-to-Lug
47mm
48mm
Lug Width
20mm
20mm
Finish
Brushed and polished
—
Water Resistance
300m
200m
Crystal & Dial
4 specsAR Coating
Inner
Yes
Dial Color
Black
—
Indices
Applied
—
Lume
BGW9
None
Movement
4 specsCaliber
Miyota 9075
Seiko NH35
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
0h
Jewels
25
0
Pricing
1 specsMSRP
$600
$399
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