Tudor Pelagos FXD: A Reference Guide to the Fixed-Lug Diver

The Pelagos FXD case is grade-2 titanium, 42mm in diameter, with the fixed lug bars integrated into the case flanks. Water resistance is rated to 200 metres, sufficient for the reference's intended use even though it is lower than the 500m rating of the standard Pelagos. The bidirectional bezel is titanium with a matte ceramic insert.

The movement is the Tudor calibre MT5602, a COSC-certified in-house automatic with a 70-hour power reserve, silicon hairspring, and variable inertia balance. It is the same base movement used across the Black Bay and Pelagos lines, chosen for robustness rather than decoration. The caseback is closed and engraved rather than exhibition-style.

Straps ship in pairs: the navy woven fabric strap plus a rubber strap with an extension for wetsuit use. There is no bracelet option, and the fixed lugs mean any third-party strap must be a pass-through style.

In 2023 Tudor released the Pelagos FXD in a red-dial variant produced in partnership with Alinghi Red Bull Racing, the Swiss syndicate competing in the 37th America's Cup. The bezel was inverted for regatta countdown timing - a 10-minute count running clockwise instead of the Marine Nationale's swim-timing scale - and the dial was finished in a deep matte red with white-lume snowflake hands.

The Alinghi edition is not a limited edition in a numbered sense; it is a permanent catalogue reference. But it is the FXD's first departure from the pure-tool aesthetic and it introduced the possibility of the line as a broader design platform rather than a single military variant.

The Pelagos FXD Chrono, launched in 2023, keeps the fixed-lug case and grows it to 43mm to accommodate a column-wheel chronograph movement, the calibre MT5813. The dial layout uses a bi-compax arrangement (two sub-dials) rather than the tri-compax of most modern chronographs, and the bezel carries a tachymeter scale for measuring average speed over a known distance - the classical use case for a racing chronograph.

The Cycling edition, launched with the Alinghi partnership in the same period, applies the FXD Chrono case to a yellow-and-black colourway associated with cycling teams, and pairs it with a rubber strap textured to resemble tyre tread. It is the most stylised of the FXD variants and the one most clearly positioned as a lifestyle object rather than a tool.

Collectors should note that the FXD Chrono is a chronograph in a fixed-lug diver's case, not a diver's chronograph in the classical sense. Its water resistance is 200m, but the pushers are not screw-down, and it is not intended for saturation use.

The FXD's fixed strap bars are its most distinctive feature and, at the time of writing, are difficult to counterfeit convincingly. But collectors should still verify the caseback engraving depth, the alignment of the bezel insert, and the finish transition where the polished chamfer meets the brushed case flank - the three details where lower-quality reproductions tend to fail.

For the Marine Nationale reference specifically, the M.N. serial on the caseback is not a limited-edition number; it is a designation shared across the production run and does not affect value in the way a numbered edition would. Provenance for the FXD line is otherwise straightforward: all variants remain in production, warranty transfers are honoured for the balance of the five-year international warranty, and Tudor service centres carry the necessary parts.

Secondary-market prices for the FXD have been stable relative to other modern Tudors, without the multiplier premiums seen on Black Bay 58 or Submariner references. This reflects the reference's tool-first positioning; it is bought to be worn, not stored.