The Pelagos FXD (ref. M25707B-0001) is the fixed-bar-lug Pelagos — 42mm titanium, the in-house MT5602 (no-date variant of the MT5612), and a case design developed with the Marine Nationale French combat-swimmer unit. The 'FXD' refers to the fixed strap-bars: no quick-release, no spring bars, just permanently-attached bars sized for the issued Marine Nationale strap. It is the most-tool-watch dive watch in Tudor's modern catalog.

What it is

Tudor announced the Pelagos FXD in 2021 as a Marine Nationale collaboration — a navy-blue-dialed titanium dive watch with fixed strap-bars (a design inherited from the 1970s Tudor 7016 'Marine Nationale' issued to the same unit). The MT5602 caliber is the chronometer-certified in-house Tudor movement without the date complication — a 70-hour reserve, free-sprung balance, silicon hairspring. The bezel is bidirectional (a navigation tool, not a dive-time bezel — significant because the FXD is designed for amphibious-navigation work, not recreational diving).

A black-dialed 'Pelagos FXD Chrono' followed; a 2023 'Pelagos FXD Alinghi' edition added a red bezel.

Buying notes

Common things to check: titanium case finishing (Tudor's titanium is unforgiving of polishing — most professional refinishing services will not touch a titanium FXD case, so original-finish examples are the canonical buy and scratched cases should be priced as condition-relevant rather than restorable); fixed strap-bars (the FXD ships with a Marine Nationale fabric strap and a rubber strap — verify both are included; aftermarket bracelets do not fit the FXD without modification, and the watch's design intent is the fabric or rubber strap); bidirectional bezel (correct on the FXD — it's a navigation bezel, not a dive-time bezel; if the bezel is unidirectional, it has been service-replaced incorrectly); MT5602 (in-house Tudor caliber, robust, no date complication); the watch is 42mm and 12.75mm thick — wears smaller than the original 42mm Pelagos because of the fixed-bar lug design.

Market read

Pelagos FXD examples trade in the $3,800-$4,300 range through 2024-2026, against a retail of approximately $4,400. The FXD has been one of the better-priced modern dive watches at the in-house caliber level; secondary-market supply has been consistent and pricing is steady. The 'Alinghi' and 'Chrono' variants trade at proportionally higher prices.

The fixed-bar lug design polarizes buyers — collectors who want strap-versatility prefer the standard 39mm Pelagos; collectors who want the tool-watch credentials of the Marine Nationale collaboration prefer the FXD.

Service expectations

The MT5602 is Tudor's in-house caliber and is serviced by Tudor's network and by experienced Rolex/Tudor independents — the same service story as the BB58 and the Pelagos 39. Service interval is 7-10 years; cost is moderate (low-four-figures via Tudor). Titanium case refinishing is not a routine service item; buyers should expect to live with the watch's accumulated wear rather than restoring it.