Side by side
Fortis Marinemaster M-40vsIslander 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
13 of 29 specs differDiameter
Marinemaster M-4040mm
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-31140mm
Power Reserve
Marinemaster M-4038h
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311—
Water Resistance
Marinemaster M-40300m
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311200m
MSRP
Marinemaster M-40$3,520
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311$399
Full specifications
Case
5 specsThickness
13mm
13.5mm
Lug-to-Lug
—
48mm
Lug Width
21mm
20mm
Finish
Brushed and polished
—
Water Resistance
300m
200m
Crystal & Dial
3 specsAR Coating
Inner
Yes
Dial Color
Orange
—
Indices
Applied
—
Movement
4 specsCaliber
Sellita SW220-1
Seiko NH35
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
0h
Jewels
26
0
Pricing
1 specsMSRP
$3,520
$399
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