Side by side

Islander Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195vsGrand Seiko SLGA001

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

The bottom line

The 40.5mm Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195 wears 6.4mm narrower than the 46.9mm SLGA001 — that's a meaningful jump on most wrists.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195

Owners and reviewers widely praise the Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195 for its attractive ripple dial, high-beat Miyota 9015 movement, and sapphire crystal, noting its excellent build quality and value at $250. One owner highlights the watch's colors and movement as key strengths, while another finds it worthy of being a primary daily wear. On balance, owners and reviewers rate the Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195 highly for its combination of aesthetic appeal, reliable hi-beat movement, and strong value proposition.

Grand Seiko SLGA001

The Grand Seiko SLGA001 is praised for its impressive technical achievements, including a new, slimmer Spring Drive movement with a five-day power reserve and exceptional accuracy of ±0.5 seconds per day. Reviewers note the 47mm titanium case, despite its substantial dimensions, wears more comfortably due to its titanium construction, short lugs, and virtually scratch-proof finish. The watch features a 600-meter water resistance and is limited to 700 pieces, priced at $11,100. On balance, reviewers consider the Grand Seiko SLGA001 a highly capable dive watch, with its technological advancements in the Spring Drive movement being a key highlight.

From video reviewers

The watch's Spring Drive movement, specifically the Cal.9RA5, offers a 120-hour power reserve. A notable trade-off is the watch's relatively large size, with a case diameter of 46.9mm and thickness of 16.0mm, which may not suit those with smaller wrists. The high price point may be a trade-off for some buyers.

Where to get them

Check prices & track

Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195
Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195
MSRP $499
Grand Seiko SLGA001
Grand Seiko SLGA001
MSRP $11,100
Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195
IslanderIslander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195
MSRP $499
SLGA001
Grand SeikoSLGA001
MSRP $11,100

At a glance

16 of 29 specs differ
Diameter
Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-19540.5mm
SLGA00146.9mm
Power Reserve
Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195
SLGA001120h
Water Resistance
Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195200m
SLGA001100m
MSRP
Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195$499
SLGA001$11,100

Full specifications

Case

7 specs
Diameter
40.5mm
46.9mm
Thickness
12.5mm
16mm
Lug-to-Lug
47mm
50.8mm
Lug Width
20mm
23mm
Material
Stainless Steel
Titanium
Finish
Brushed and polished
Water Resistance
200m
100m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Black
Indices
Applied

Movement

5 specs
Caliber
Miyota 9015
9RA5
Type
Automatic
Spring Drive
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
120h
Jewels
0
25

Pricing

1 specs
MSRP
$499
$11,100

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