Islander · Microbrand · United States

Islander Calabro GMT World Time

In production · GMT, Worldtimer, Pilot

Islander Calabro GMT World Time with anthracite world-grid dial and blue world-time bezel on H-link bracelet
Photo: Long Island Watch
  • Islander Calabro GMT World Time with silver world-grid dial and black bezel
  • Islander Calabro GMT World Time with blue and brown attitude-indicator dial
  • Islander Calabro GMT World Time with green dial and green bezel
  • Islander Calabro GMT World Time with white dial and blue bezel
  • Islander Calabro GMT World Time with sunburst gold dial and blue bezel
  • Islander Calabro GMT World Time with black dial and yellow accents
  • Islander Calabro GMT World Time with black dial and red accents
  • Islander Calabro GMT World Time with blue dial
  • Islander Calabro GMT World Time with red dial and red bezel
  • Islander Calabro GMT World Time with purple dial and purple bezel
  • Islander Calabro GMT World Time with light blue full-lume dial
From $329 to $379
  • Seiko NH34A
  • 40 mm × 14 mm
  • Sapphire crystal
  • 200 m water resistance

Movement

Type
Automatic
Tier
Entry
Complications
Date, GMT
Frequency
21,600 bph
Power reserve
41 h
Hacking
Yes
Accuracy (factory)
-20 / +40 s/day

Case

Diameter
40 mm
Lug to lug
48 mm
Thickness
14 mm
Lug width
20 mm
Material
Steel
Hardening
—
Water resistance
200 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
Bidirectional, World time (cities), aluminum insert

Crystal & dial

Crystal
Sapphire
Shape
Flat
Anti-reflective
Inner
Lume
Lumed numerals, indices and all four hands (type not stated)

Bracelet & clasp

Style
H-link
Links per row
—
Solid end links
Yes
Solid links
Yes
Link attachment
Screws
Taper
20 → 18 mm
Quick release
—
Half links
—
Clasp
—
Micro-adjust
On-the-fly
Diver extension
—

Weight

Head only
—
On bracelet
—
On strap
—
Stated weight (basis not given)
180 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
Anthracite dial—Msrp379 USD$3792026-10-21link
Silver dial—Msrp379 USD$3792026-10-21link
Attitude Indicator dial—Msrp379 USD$3792026-10-21link
Green dial—Msrp379 USD$3792026-10-21link
White dial—Msrp329 USD$3292026-10-21link
Gold dial—Msrp329 USD$3292026-10-21link
Black dial, yellow accents—Msrp329 USD$3292026-10-21link
Black dial, red accents—Msrp329 USD$3292026-10-21link
Blue dial—Msrp329 USD$3292026-10-21link
Red dial—Msrp329 USD$3292026-10-21link
Purple dial—Msrp379 USD$3792026-10-21link
Full Lume dial—Msrp329 USD$3292026-10-21link

Variants

NameReferenceDialBezelStatus
Anthracite dialISL-316anthraciteBlue aluminium—
Silver dialISL-317silverBlack aluminium—
Attitude Indicator dialISL-318blue/brownBlack aluminium—
Green dialISL-193greenGreen aluminium—
White dialISL-190whiteBlue aluminiumDiscontinued
Gold dialISL-191goldBlue aluminium, gold-tone bezelDiscontinued
Black dial, yellow accentsISL-192blackBlack aluminiumDiscontinued
Black dial, red accentsISL-240blackBlackDiscontinued
Blue dialISL-241blueNavyDiscontinued
Red dialISL-242redRedDiscontinued
Purple dialISL-243purplePurpleDiscontinued
Full Lume dialISL-244light blue (full lume)Dark greyDiscontinued

About this entry

89% of key specs known. Missing: hardening, bracelet links.

Islander's first Seiko NH34 GMT, named after Calabro Airport in Brookhaven, Long Island. "Caller" GMT with the date at 6, an independently set GMT hand read on an inner 24-hour scale, and a world-time city bezel with "Long Island" in place of New York. All twelve references share the same spec table (40 x 14mm, 48mm lug to lug, 20mm lugs, screw-down crown, 200m, embossed solid screw-down caseback, flat sapphire with inner AR, 180g, not stated what was weighed) and description; case is "stainless steel" (grade not stated). The bezel is bidirectional per the Serious Watches dealer listing (click count not stated); the brand names an aluminium insert for ISL-190 to 193 and ISL-316 to 318, and doesn't state the material for ISL-240 to 244. Raised aviation numerals and indices filled with lume, all four hands lumed (lume type not stated). Bracelet: solid H-link with solid end links that articulate at the lug, sized with screws, 20mm tapering to 18mm. ISL-193 and ISL-316 to 318 have a ratcheting on-the-fly micro-adjust clasp; ISL-190 to 192 and ISL-240 to 244 came with a deployant clasp with 3 micro-adjust positions. ISL-316 to 318 use a later dial design with full Arabic numerals and a world-grid or attitude-indicator texture. ISL-240 to 244 were sold under the shorter title "Calabro GMT World Time Watch"; their spec tables, descriptions and photos show the same case, movement and bracelet, so they are recorded as colourways. Their colour names come from the store titles and accent and bezel colours from photos. The purple ISL-243 is listed at $379 although its siblings are $329. On 2026-10-21 ISL-316, 317 and 318 were in stock and ISL-193 was sold out but not marked discontinued; the other eight are tagged "Discontinued".

Last verified: 2026-10-21. Edit or correct this entry.

Sources