Side by side

Islander Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311vsGrand Seiko SLGA015

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311
IslanderIslander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311
MSRP $399
SLGA015
Grand SeikoSLGA015
MSRP $12,600

At a glance

15 of 29 specs differ
Diameter
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-31140mm
SLGA01543.8mm
Power Reserve
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311—
SLGA015120h
Water Resistance
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311200m
SLGA015200m
MSRP
Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311$399
SLGA015$12,600

Full specifications

Case

6 specs
Diameter
40mm
43.8mm
Thickness
13.5mm
13.8mm
Lug-to-Lug
48mm
51.5mm
Lug Width
20mm
23mm
Material
Stainless Steel
Titanium
Finish
—
Brushed and polished

Crystal & Dial

3 specs
AR Coating
Yes
Yes
Dial Color
—
Black
Indices
—
Applied

Movement

5 specs
Caliber
Seiko NH35
9RA5
Type
Automatic
Spring Drive
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
120h
Jewels
0
25

Pricing

1 specs
MSRP
$399
$12,600

Follow this matchup

Get a note when Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 vs Grand Seiko SLGA015 gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Zelos Swordfish 3
Zelosmicro

Swordfish 3

40/42mm
2 watches · 35 variantsSwordfish
40/42mm·Automatic·200m WR
$399MSRP
—Used
RZE Aspirare
RZEmicro

Aspirare

Ref. RZE-ASP
44mm·Automatic·200m WR
$699MSRP
—Used
William Wood Fearless
William Woodmicro

Fearless

3 variantsFearless
39mm·Automatic·100m WR
$920MSRP
—Used
Spinnaker Tesei Titanium
Spinnakermicro

Tesei Titanium

4 watches · 10 variantsTesei
42mm·Automatic·200m WR
$625MSRP
—Used
Boldr The T Rex By Boldr X Nitecore
Boldrmicro

The T Rex By Boldr X Nitecore

Ref. the-t-rex-by-boldr-x-nitecore
40mm·Automatic·200m WR
$499MSRP
—Used
Zelos Great White 43
Zelosmicro

Great White 43

3 variantsGreat White
43mm·Automatic·300m WR
$599MSRP
—Used
Boldr BOLDR x Nitecore
Boldrmicro
Limited Editions

BOLDR x Nitecore

Ref. boldr-x-nitecore-kraken
38mm·Automatic·200m WR
$449MSRP
—Used
Geckota Sea-Hunter Dive Watch
Geckotamicro

Sea-Hunter Dive Watch

6 variantsSea-Hunter
40mm·Automatic·200m WR
$349MSRP
—Used
All alternatives to the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 →All alternatives to the SLGA015 →
Explore the full catalog
Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Grand Seiko SLGA015vsZelos Swordfish 3Grand Seiko SLGA015vsWilliam Wood FearlessGrand Seiko SLGA015vsBoldr The T Rex By Boldr X NitecoreBOLDR x NitecorevsGrand Seiko SLGA015Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311vsRZE AspirareIslander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311vsSpinnaker Tesei Titanium
Edit this comparisonAdd another watchMore diver comparisonsBest Diver Watches Under $500Explore more 39–45mm watches