Perrelet · Turbine

Strap for Turbine XL

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter48 mm
ReferenceA1051/4
FamilyTurbine
MovementPerrelet caliber P-331 Hours, Minutes, Seconds
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Turbine A1051/4

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Turbine A1051/4, seen from the bench

The Perrelet Turbine A1051/4 is a mechanical watch with twelve rotating blades that transform the dial into a window showcasing pure motion. It features the Perrelet caliber P-331 movement, displaying hours, minutes, and seconds with Swiss certified precision. The stainless steel case measures 48.00mm in diameter, paired with a 20mm lug width designed for specific strap compatibility without construction compromises.

Frequently asked questions

What is the lug width of the Perrelet Turbine A1051/4?

The Perrelet Turbine A1051/4 features an integrated lug width of 20mm. This measurement represents the internal distance between the case lugs and determines strap compatibility. Accurate measurement is essential: use a digital calliper, position it between the internal edges of the lugs, and ensure tolerance of ±0.1mm for a perfect fit without play or forcing.

Which strap material is most suitable for the Perrelet Turbine A1051/4?

For the Perrelet Turbine A1051/4, alligator leather straps represent the most refined choice: the fine grain enhances movement visibility and creates a striking contrast between the organic nature of the material and the turbine's engineering. Excellent alternatives include vegetable-tanned calf leather for pronounced texture and sustainability, or Ballistic Nylon NATO straps for a sporting interpretation. Premium FKM rubber offers practicality and water resistance whilst maintaining technical aesthetics.

How do I change the strap on a watch with integrated lugs like the Perrelet Turbine?

The integrated lugs of the Perrelet Turbine A1051/4 require a specific procedure. Using a spring bar tool, insert it into the lateral opening of the lug to compress the internal spring. Gently remove the previous strap, then position the new strap through the upper hole and gradually release the tool to allow the spring to return to its seat. Verify that the lug is properly positioned and the strap adheres uniformly on both sides.

Can I use an aftermarket strap with the Perrelet Turbine A1051/4?

Yes, any strap with a 20mm lug width is compatible with the Perrelet Turbine A1051/4. We recommend selecting specialised brands that guarantee precise tolerances and certified materials. Bespoke artisanal straps offer the highest level of personalisation: you can select the material (alligator, calf, shell cordovan), colour, and buckle finishes according to your stylistic and functional preferences.

What is the typical lifespan of a leather strap on the Perrelet Turbine?

The lifespan of a leather strap depends on material quality, usage patterns, and maintenance. Premium alligator or calf leather maintains structural integrity for 3 to 5 years of daily wear, provided it is protected from excessive moisture and prolonged exposure to direct heat or sunlight. Vegetable-tanned leather develops patina and character over time, gaining greater durability than industrial tanning methods. To extend lifespan, rotate straps periodically and apply quality-specific leather treatments regularly.

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