Side by side
Islander Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311vsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-31140mm
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Power Reserve
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311—
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch50h
Water Resistance
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311200m
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
MSRP
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311$399
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$2,900
Full specifications
Case
5 specsDiameter
40mm
42.6mm
Thickness
13.5mm
13.4mm
Lug-to-Lug
48mm
49.3mm
Finish
—
Brushed and polished
Water Resistance
200m
300m
Crystal & Dial
5 specsCrystal Shape
Flat
Curved
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
—
Black
Indices
—
Applied
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
4 specsCaliber
Seiko NH35
8L35
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
50h
Jewels
0
26
Pricing
1 specsMSRP
$399
$2,900
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 vs Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's WatchvsZelos Swordfish 3Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's WatchvsWilliam Wood FearlessSheffield 1AvsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's WatchSheffield 1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no datevsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's WatchEcho/Neutra Cristallo Professional Diver 500mvsIslander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311vsCWC 1980 RN Divers Automatic Re-Issue Watch