Price Comparison Table
| Model | Movement | Case | Crystal | Water Resistance | Price (maker's own page) |
|---|---|---|---|---|---|
| Islander Automatic Dive Watch #ISL-18 | Miyota 8205 | 43mm steel | Double-dome AR sapphire | 200m | $369.00 |
| Seiko 5 Sports SRPD79 | Caliber 4R36 | 42.5mm steel | Hardlex | 100m (10 bar) | USD 375.00 |
| Seiko 5 Sports SRPD55 | Caliber 4R36 | 42.5mm steel | Hardlex | 100m (10 bar) | USD 350.00 |
| Islander Mitchel Automatic Field Watch #ISL-41 | Miyota 8215 | 39mm steel | AR sapphire | 100m | $249.00 |
| Islander Automatic GMT Dive Watch #ISL-214 | Seiko NH34 | 42mm steel | Sapphire | 200m | $369.00 (List $499.00) |
| Invicta Pro Diver 8926 | Caliber IM-A-005 (NH35A-based) | 40mm steel | Mineral | 200m | MSRP $495 |
| Islander Republic Traveler GMT #ISL-238 | Miyota 9075 | 40mm steel | Flat sapphire with inner AR | 200m | $595.00 (List $695.00) |
| Doxa Sub 300 Professional | Swiss automatic, COSC | 42.5mm steel | n/a | 300m | USD 2,890.00 |
Islander Automatic Dive Watch (ISL-18)
This Islander dive watch has an engraved screw-in case back with a rendering of Long Island on it along with the Islander name and 200 meter water resistance. The movement is a Miyota 8205 Automatic (hand wind, hacks) inside a 43mm stainless steel case, 14mm thick, with a double-dome, anti-reflective sapphire crystal, listed on Long Island Watch's own product page at $369.00.
The comparable Seiko reference is the 5 Sports SRPD79, which Seiko's own site lists with Caliber Number 4R36 and 24 jewels, a Hardlex crystal and a price of USD 375.00. A cheaper SRPD colourway, the SRPD55, lists on Seiko's own page at USD 350.00, also with a Hardlex crystal rather than sapphire. On spec sheet terms, Islander's ISL-18 trades a dive-watch-coded case for sapphire instead of Hardlex at a similar price point. It fits the site's automatic watches under $500 bracket; more Seiko references sit in the Seiko brand guide.
Islander Mitchel Automatic Field Watch (ISL-41)
Islander Mitchel Automatic Field Watch with Nylon Weave Strap and an AR Sapphire Crystal #ISL-41 runs Movement: Miyota 8215 Automatic (hand wind, hacks) in a 39mm case, priced on Long Island Watch's own listing at $249.00. The case back is an Exhibition-Window screw-in back and water resistance is rated to 100 meters.
Seiko does not sell a direct field-watch equivalent at this exact spec, but its closest 5 Sports field reference lists at roughly $195–$295 depending on configuration per Seiko's own pricing pattern on the SRPD and SRPG families described above. The ISL-41 undercuts the mid-tier of that range while adding a sapphire crystal where Seiko's comparable tier uses Hardlex. See the site's best field watches roundup for other references at this price.
Islander Automatic GMT Dive Watch, Blue Waffle Dial (ISL-214)
On Long Island Watch's own product page, the ISL-214 is built around Seiko's NH34 automatic movement, a caller GMT that allows the wearer to track a second time zone, a very handy feature for travel, inside a stainless steel case, 42mm x 14mm. Movement: Seiko NH34 Automatic GMT, handwind and hacks. Case: Stainless steel, 42mm x 14mm. The same page lists List Price: $499.00 against an Island Watch Price: $369.00, a $130.00 savings.
The nearest mainstream comparison on movement is the Invicta Pro Diver 8926, which runs Caliber IM-A-005, Invicta's branded designation for its NH35A-based automatic, in a 40mm stainless steel case with a mineral crystal rather than sapphire, listed on Invicta's own site at MSRP $495. Invicta's catalogue runs the same movement family across variants priced from MSRP $495 up to MSRP $595 for the OB colourway, per Invicta's own product pages. None of those references include a GMT function, so the ISL-214 occupies a different spec tier even before price enters the comparison. It belongs on the site's GMT watches under $1,000 list; Invicta's other steel divers are tracked in the Invicta brand guide.
Islander Republic Traveler GMT (ISL-238)
Long Island Watch's own product page lists the ISL-238 with Movement:Miyota 9075 Traveler GMT, handwind and hacks, Case:Stainless steel, 40mm x 13.1mm, 46.5mm tip to tip, Back:Solid embossed screwdown, Crystal:Flat sapphire with inner AR, with List Price: $695.00 against an Island Watch Price: $595.00, Savings: $100.00. This is the highest-priced standard reference in the Islander catalogue, and the maker's own collection pages currently list it as sold out.
Where Islander Stops Competing: Doxa Sub 300
Most of Islander's dive and GMT models sit between $249.00 and $450.00 on Long Island Watch's own pricing, with the Republic Traveler GMT (ISL-238) at $595.00 marking the top of the standard line before limited editions. Doxa's Sub 300 Professional, by contrast, lists on Doxa's own site at Sale price USD 2,890.00, built around a three-hand self-winding movement holding COSC Certified Chronometer certification with a 38-hour power reserve. The case is 42.5 mm, made from 316L stainless steel. That price gap, roughly five times Islander's top listed price, is the one Islander's spec sheet does not try to close: COSC certification and Swiss manufacture are not things a Miyota- or NH-based movement competes on regardless of case finishing. Full specs and other references sit in the Doxa brand guide.
Models Left Off This Comparison
Duxot Henri Diver Automatic, carried by Long Island Watch as a third-party line rather than an Islander house model; several dial variants are listed as sold out on the brand's own collection page.
Islander x The Urban Gentry "Rangemaster II GMT" Limited Edition (ISL-266, ISL-267), a collaboration priced above the standard Islander range on Long Island Watch's own site, excluded here because it sits outside the brand's regular catalogue pricing.
Stock Notes
Long Island Watch's own product pages show frequent in-stock and sold-out status changes across the Islander range; the ISL-214 waffle-dial GMT, for example, has cycled between in-stock and sold-out listings on the brand's own site. Check each linked product page directly before assuming a specific reference or dial colour is currently orderable.
For broader context, see the site's automatic watches under $500, best field watches, and GMT watches under $1,000 roundups, plus the Seiko, Invicta and Doxa brand guides for the mainstream references named above.