Tudor · Pelagos

Strap for Tudor Pelagos M25827KNJN

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter42 mm
ReferenceM25827KNJN
FamilyPelagos
MovementTudor caliber MT5813 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer

Recommended spring bar

Modern Tudor 22mm spring bars — factory specification

Technical match for lug width and diameter · lug 22 mm · Ø 1.8 mm

All Tudor spring barsOpen →

Straps for the Pelagos M25827KNJN

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Pelagos M25827KNJN, seen from the bench

The Pelagos is a Tudor dive chronograph featuring a 42mm titanium case with carbon and stainless steel elements. It is powered by the automatic MT5813 caliber with chronometer certification, column-wheel chronograph function, and date indication. The lugs accommodate 22mm wide straps.

Frequently asked questions

What is the lug width of the Tudor Pelagos M25827KNJN?

The lug width of the Tudor Pelagos M25827KNJN is 22mm. This dimension is measured by positioning a calliper between the two lugs protruding from the case: the perpendicular distance corresponds exactly to 22mm. It is essential to verify this measurement before ordering an aftermarket strap, as an incorrect size will not fit into the lugs and will create mechanical stress on the case.

Which strap is most suitable for the Tudor Pelagos M25827KNJN?

For the Pelagos M25827KNJN, we recommend straps in alligator, vegetable-tanned calf leather, shell cordovan, or vulcanised rubber. Genuine alligator creates an elegant contrast with the brushed titanium case, whilst black calf leather with grey patina offers rigorous sobriety. If the watch is regularly immersed, a black rubber strap with titanium deployante ensures grip in water and indefinite durability. Your choice depends on the context of use and the desired aesthetic profile.

How do you change the strap on the Tudor Pelagos M25827KNJN?

To change the strap on the Pelagos M25827KNJN: 1) place the watch on a soft surface; 2) use a spring bar tool to gently lift the internal spring of the lug; 3) push towards the centre of the case whilst lifting the strap; 4) repeat on the other side; 5) insert the new strap by aligning the holes with the lugs; 6) lower the spring until it clicks into position. A simple operation but one that requires delicacy to avoid scratching the titanium case.

Is an aftermarket strap compatible with the Tudor Pelagos M25827KNJN?

Yes, any aftermarket strap with 22mm lug width is compatible with the Pelagos M25827KNJN. We recommend checking the construction quality (perfect stitching, robust deployante) and the absence of scratches on the attachment points that could mark the titanium case. The best aftermarket straps respect flexibility and dimensional compatibility standards; however, it is always preferable to purchase from suppliers specialising in luxury watches who control precise fitting.

How long does a leather strap last on the Tudor Pelagos M25827KNJN?

The lifespan of a leather strap depends on use, climate, and tanning quality. Vegetable-tanned calf leather, worn daily, typically lasts 18–24 months before requiring replacement. Alligator, being more structured and resistant, can exceed 3 years. Shell cordovan reaches 4–5 years of intensive wear. If the Pelagos M25827KNJN is regularly immersed, exposure to salt water accelerates leather ageing. A vulcanised rubber strap, on the other hand, shows no ageing and remains functional indefinitely.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only