Name: Tudor Pelagos (39mm) M25407N-0001
Brand: Tudor
SKU: M25407N-0001

The Pelagos 39 (ref. M25407N) is the 2022 follow-up to Tudor's original 42mm titanium Pelagos, re-sized to 39mm, with a black ceramic bezel, the in-house MT5400 caliber, and the helium-escape valve omitted at the smaller case size. It pairs Tudor's serious dive-watch heritage with proportions that wear closer to the Black Bay 58 than to the larger Pelagos that preceded it.

What it is

Tudor launched the original Pelagos in 2012, 42mm, titanium-cased, 500m depth-rated, with a helium-escape valve and the matrix-grade lume that defined the modern Tudor dive-watch identity. The Pelagos 39 arrived in 2022 as a smaller, dressier sibling: 39mm titanium case, ceramic bezel insert (vs the aluminium on the original), 200m water resistance, MT5400 in-house caliber (the no-date variant of the MT5402 used in the Black Bay 58) with a 70-hour reserve and chronometer certification. The helium-escape valve was omitted at the 39mm size, a reasonable trade for the case-thickness reduction, given that the watch is firmly recreational at 200m.

A single bracelet option ships factory; the no-date layout is its own design statement.

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 Pelagos case, so original-finish examples are the canonical buy and scratched cases should be priced as condition-relevant rather than restorable); ceramic bezel (the bezel insert is ceramic, not aluminium, chipping is rare but terminal when it happens, and replacement is a Tudor-service item); bracelet (the titanium bracelet ships with Tudor's T-fit micro-adjust clasp, verify the clasp functions and that the bracelet end-links seat cleanly); MT5400 movement (in-house Tudor caliber, robust, with the same service profile as the Black Bay 58's MT5402); the no-date dial is the only factory configuration, any presented 'date variant' is wrong.

Market read

The Pelagos 39 sits in an unusual position in the modern catalog: Tudor's allocation has remained tight enough that the watch trades at-or-near MSRP through most authorized channels, but the secondary market is more available than the Black Bay 58 was at the same point in its life. Honest full-set examples trade in the mid-$3,000s to low-$4,000s in 2025-2026, modestly below the Tudor retail price for new examples. The smaller case size has broadened the watch's appeal versus the original 42mm Pelagos; the secondary market has firmed steadily through 2024.

Service expectations

The MT5400 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. Service interval is 7-10 years; cost is moderate (low-four-figures via Tudor, comparable from competent independents). Titanium case refinishing is not a routine service item; buyers should expect to live with the watch's accumulated wear rather than restoring it.

Editorial copy is AI-drafted from primary sources and reviewed by Grail Atlas before publication. Where the text is uncertain about a fact, it says so. Email corrections@grailatlas.com if something reads wrong. Signals on this page (community, OSINT) are clearly separated from the editorial sections.

GPHG 2023WinnerPrix de la Montre Sport

Entry to the Grand Prix d'Horlogerie de Genève is voluntary and made by the brand. An entry is a watch registered for that year's competition, not a jury verdict, and several large houses including Rolex, Patek Philippe and Omega do not take part at all.

The 39mm titanium Pelagos with ceramic bezel and helium valve offers a technical dive watch specification at a price that undercuts most Swiss professional dive alternatives.

Mass-producedbest value#1 in familyOfficial press photos

Condition affects price

Pre-owned watches trade across a wide condition spectrum. These ranges are typical for the secondary market.

New Old Stock

Unworn example retaining original packaging, tags, and warranty documentation.

+30–50% vs median

Unpolished

Worn but the case has never been polished; original brushed and polished surfaces are intact.

+15–25% vs median

Polished

Case has been professionally or amateur polished at some point; edge definition is softened.

-15 to -5% vs median

Recently Serviced

Movement has been recently serviced with documented service records; case condition varies.

At median

Project

Needs service, has dial or hand issues, non-original parts, or other remediation before daily wear.

-50 to -25% vs median

Full condition grading guide →

Market price

$2,800–$4,000

steel·2026 Q2

Price trend chart coming soon

The 39mm Pelagos in titanium with ceramic bezel offers professional dive watch credentials at a price well below Swiss alternatives; secondary values are stable and the watch rarely trades at significant discount.

Editorial estimate, 2026 Q2. Actual prices vary by condition, date, and box/papers status.

Movement tier: unclassified · caliber Tudor MT5400: in-house automatic, 28,800bph, 70h PR, 26j; COSC-certified, free-sprung balance, silicon hairspring · 70h power reserve (2.9 days)

Versatile size: fits most wrists (6–7.5 in / 15–19 cm)

39 mm case. The sweet spot for the broadest range of wrist sizes. Neither too dainty nor too bold.

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Authentication

In-house MT5612 or MT5613 movement with METAS certification visible on caseback distinguishes genuine Pelagos from fakes

Known issues in the market

Earlier Pelagos used ETA or Rolex-sourced movements before Tudor introduced in-house calibres; verify movement matches the production year claimed
Titanium case is significantly lighter than steel; weight is a useful first check
Helium escape valve at 10 o'clock must be functional on dive versions

Area	What to check	What is correct	Red flag
movement	MT5612/MT5613 in-house calibre	"Tudor MT5612" (no date) or "MT5613" (date) engraved; COSC or METAS certification per variant; manufacture movement architecture; rotor visible through exhibition caseback; "Tudor" signed	ETA 2824 on a claimed in-house Pelagos (year mismatch); movement unsigned; calibre inconsistent with documented production year; no exhibition caseback
case	Titanium case and helium valve	Titanium brushed case; significantly lighter than steel equivalent; helium escape valve at 10 screw-in; "500m / 1650ft" on caseback; screw-down crown; 42mm diameter	Magnetic attraction (titanium is non-magnetic); incorrect water resistance rating; helium valve absent or non-functional; weight inconsistent with titanium
dial	Dive dial with luminous plots and rotating bezel	"Tudor" and "Pelagos" on dial; date window position per variant; large luminous plots with heavy fill; ceramic unidirectional rotating bezel; 60-minute scale; bezel ratchet engages in one direction only	Bi-directional rotating bezel; missing "Pelagos" text; luminous plots that do not glow; bezel without ceramic insert on post-2012 examples

Common legitimate replacements

Tudor fabric strap is original; rubber strap and bracelet options are also OEM; aftermarket replacement is common.
Rouleaux or riveted bracelet requires link size verification to ensure authentic Tudor link pitch.

Expert resources: Tudor authenticates via authorised dealers and service centers. Fratello Watches and Revolution Magazine have documented Pelagos calibre transitions with movement photography.

Authentication guide

Last reviewed June 2026

The Pelagos is Tudor's professional dive reference, built on a titanium case with COSC certification and a ceramic bezel. The titanium construction and the specific bezel ceramic quality are the two tells most often missed on replica examples.

Known reproduction risks

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MEDIUM

Steel-cased replicas with correct case proportions and a ceramic-look bezel that is actually aluminum or PVD-coated steel.

Weight that feels comparable to a steel watch -- the Pelagos should feel noticeably lighter
Bezel surface that accepts scratches from a key or knife edge
Case surface that collects fingerprints readily
Caseback without "Titanium" text or with titanium text on a magnetic case (titanium is non-magnetic)

The simplest field test: hold a strong magnet to the case. Titanium is non-magnetic; steel will attract. The Pelagos should show zero attraction.

LOW

First-generation Pelagos examples with aftermarket ceramic bezels from non-Tudor sources, typically replaced after damage.

Bezel numeral font weight inconsistent with the known Tudor production specification
Bezel insert surface with any texture differences at the edges versus the center
Aging character of bezel inconsistent with the overall case condition on the same example

Dial variants by era

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Era	Description	Identifiers
2012 to 2021 (first and second generation)	Blue or black dial variants with applied luminous plots, date at 3, unidirectional ceramic bezel. Earlier titanium bracelet version.	Blue or black dial with applied luminous indices of consistent size and surround width "PELAGOS" text on the dial in correct Tudor typeface Date window at 3 o'clock, white numerals on white disc (or black on black per variant) Titanium bracelet with a clasp that integrates a 5mm extension segment for wetsuit use Ceramic bezel insert with matte surface and no metal bezel ring visible on top
2021 to present (current generation, ref. M25610TNL)	Snowflake hands introduced, updated case geometry, same ceramic bezel and titanium case construction.	Snowflake hour hand consistent with the Black Bay family -- flat-topped hexagonal profile Updated typography on the dial compared to first-generation examples "500M / 1640FT" water resistance text on the dial Same unidirectional ceramic bezel with 120-click detent Longer lug width than first-generation Pelagos

Service part flags

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Titanium case

Original: Grade 2 titanium construction. Titanium has a distinctive weight relative to steel -- the Pelagos feels noticeably lighter than a comparably sized steel dive watch. Titanium also has a specific matte-to-brushed surface character and does not show fingerprints the way steel does.

Replacement tells

Weight that feels comparable to a steel dive watch of the same size -- the Pelagos should feel light in hand
Case surface that collects fingerprints readily -- titanium repels oils where steel collects them
Case polishing or refinishing that has produced a mirror finish on areas stated to be brushed titanium -- titanium is difficult to polish to a mirror finish and the Pelagos should have no mirror surfaces on the case flanks

Ceramic bezel insert

Original: Zirconia ceramic insert with a matte black finish. The ceramic resists all standard scratch tools. Numerals are laser-engraved into the ceramic and filled, sitting at surface level -- not proud of the surface.

Replacement tells

Bezel surface that accepts scratches from a key -- ceramic will not scratch; aluminum will
Numerals that sit proud of the bezel surface indicating an aluminum or coated insert rather than genuine ceramic
Bezel with a gloss or semi-gloss finish on a stated matte ceramic example
Bezel insert with any play or looseness relative to the bezel ring -- the insert is adhesive-set and should be immovable

Self-adjusting clasp

Original: Proprietary Tudor clasp with a 5mm extension release for wetsuit wear. The extension snaps cleanly in and out. The clasp should lock positively in both the folded and extended positions.

Replacement tells

Aftermarket clasp without the 5mm wetsuit extension mechanism
Extension mechanism that does not snap positively into either position
Clasp stamping or finishing that is less refined than the case quality of the watch (the clasp and case are finished at the same standard)

Case back markings

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2012 to present

Solid titanium caseback with embossed or engraved Tudor rose shield
"Titanium" text on caseback confirming case material
"500M" water resistance rating engraved on caseback
Reference and serial numbers between the lugs on the case band
Caseback should be noticeably lighter to handle than a comparable steel caseback

Movement tells

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MT5612 (COSC variant) beats at 28,800bph with COSC daily rate tolerance of -4/+6 seconds. A timegrapher check should confirm this; significant deviation indicates a service requirement or movement issue.
Power reserve is 70 hours. A fully wound Pelagos stopping in under 55 hours warrants inspection.
The date change on the Pelagos should be crisp and instantaneous at midnight, not a gradual advance. Any two-step or sluggish date advance indicates a worn quickset mechanism.
The helium escape valve at 9 o'clock should unscrew by hand and reseat firmly. A frozen or overtightened HEV indicates incorrect prior service or corrosion.
The titanium bracelet clasp extension should require deliberate force to actuate -- it should not release accidentally during wrist movement. A clasp that extends under light pressure is worn.

Sources: Tudor -- Pelagos specification and MT5612 caliber documentation; WatchUSeek -- Tudor Pelagos titanium identification guide; Diving Watch Forum -- ceramic bezel material testing methodology.