Islander · Northport
Northport
This Northport record tracks Islander ISL-155: a 40.5mm hi-beat automatic dive watch with seafoam green/white ripple dial, Miyota 9015 movement, flat AR sapphire crystal, luminous sapphire bezel insert, bracelet, and 200m water resistance.
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Water res.
Thick
Lug-to-lug
Overview
| Brand | Islander |
| Reference | ISL-155 |
| Collection | Northport |
| Category | Dive |
| Price guide | Entry-level · Under $600 |
Full specification
Specs
Case & dial
| Diameter | 40.5 mm |
| Lug-to-lug | 47 mm |
| Thickness | 12.5 mm |
| Lug width | 20 mm |
| Water resistance | 200 m |
| Crystal | flat anti-reflective sapphire crystal |
| Case material | stainless steel |
| Bezel | 120-click unidirectional dive bezel with luminous sapphire insert |
| Case back | solid embossed caseback |
Movement & furniture
| Type | Automatic |
| Caliber | Miyota 9015 → |
| Functions | date |
| Power reserve | 42 h |
| Jewels | 24 |
| Lume | BGW9 Super-LumiNova on markers and hands; luminous sapphire bezel insert |
| Strap / bracelet | solid-link bracelet with negative endlinks, tapering 20mm to 16mm |
Bottom line
A more original Islander diver with strong specs and a standout dial; choose it over the basic Automatic Dive if you want smoother movement behavior and a less derivative design.
Highlights
- 40.5mm Northport dive case
- Miyota 9015 hi-beat automatic movement
- Seafoam ripple dial
- Luminous sapphire bezel insert
- 200m water resistance
Who it's for
Buyers who want a more original Islander diver than the SKX-style Automatic Dive, with a smoother 28,800 bph seconds hand and integrated bracelet look.
Before you buy
- Seafoam ripple dial is distinctive rather than conservative
- 40.5mm case is more modern than vintage-sized divers
- Miyota 9015 can have audible rotor noise in some watches
- This record tracks ISL-155 specifically
FAQ
Is the Northport automatic or quartz?
The Northport is automatic. The Miyota 9015 winds itself from the motion of your wrist, so it needs no battery. A full wind holds roughly 42 hours, so it keeps running overnight off the wrist; left longer it stops and restarts once you wear or hand-wind it.
What movement does the Northport use?
The Northport is powered by the Miyota 9015 from Miyota, an automatic caliber with 24 jewels, a 42-hour power reserve, and a 28,800 bph beat rate. Being automatic, it winds from the motion of your wrist and needs no battery.
Does the Northport have a date?
Yes — the Northport has a date display on the dial. The date advances automatically as the movement runs, so the current day of the month is always visible at a glance, and you can set it from the crown after the watch has been left to stop.
How water resistant is the Northport?
The Northport is rated to 200 m. That is true dive territory: fine for swimming, snorkelling and recreational scuba diving, as well as all daily wear. Whatever the rating, avoid operating the crown or pushers underwater, and have the gaskets checked periodically to keep it reliable.
How big does the Northport wear?
At 40.5 mm across with a 47 mm lug-to-lug and 12.5 mm thick, the Northport wears as a modern medium-to-large watch. Lug-to-lug is the measurement that really decides fit, since it sets how far the case spans the wrist — 47 mm suits most wrists, and smaller wrists especially should check that figure.
What movement does the Northport ISL-155 use?
The official page lists a Miyota 9015 automatic movement beating at 28,800 bph, with hand winding, hacking, and about 40 hours of power reserve.
How water resistant is it?
Long Island Watch lists 200m water resistance for the Northport ISL-155.
How large is it?
Official copy lists a 40.5mm case, 12.5mm thickness, and 47mm lug-to-lug.
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