Nomadic's Fíor 555 takes its name from the Irish word for "true" — a nod to home as a fixed point no matter how far you travel. The "555" references Belfast's 5°55′ West longitude, tying the watch's identity directly to where it's made. Built around a true GMT complication, the Fíor 555 is aimed at travelers who genuinely use the second-time-zone function rather than treat it as a styling exercise. The line spans six dial configurations, from high-contrast Shipyard Yellow to the 18k gold PVD Prestige edition, all sharing the same case architecture and movement.

The case is a 41mm 316L stainless steel construction (18k gold PVD-coated on the Prestige edition), paired with a stainless steel bracelet and a sapphire caseback for movement viewing. A bi-directional ceramic GMT bezel with lumed numerals wraps the dial, finished with upgraded Super-LumiNova for low-light legibility — standard fare for a tool watch built around tracking a second time zone.

Power comes from the Swiss-made Sellita SW330-2, a workhorse GMT caliber regulated in-house to within ±6 seconds per day and carrying a 56-hour power reserve. The custom rotor, visible through the caseback, is engraved with a compass motif referencing early explorers' navigation tools — a thematic touch consistent with the brand's travel framing rather than a generic decorated rotor.