Staudt · Praeludium Automatic

Strap for Praeludium Automatic

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

Lug width22 mm
Case diameter43 mm
ReferenceP21.022-A02
FamilyPraeludium Automatic
MovementETA caliber 2892-A2 hours, minutes, seconds | date
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 Praeludium Automatic P21.022-A02

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Praeludium Automatic P21.022-A02, seen from the bench

The Staudt Praeludium Automatic P21.022-A02 is a Swiss independent watchmaking instrument featuring an ETA caliber 2892-A2 automatic movement with approximately 42 hours power reserve. The stainless steel case measures 42.50 mm in diameter with a 22 mm lug width. This model from the Praeludium Automatic collection combines functional geometry and traditional manufacturing standards characteristic of contemporary Swiss haute horlogerie.

Frequently asked questions

What is the lug width of the Staudt Praeludium Automatic P21.022-A02?

The lug width of the Staudt Praeludium Automatic P21.022-A02 is 22 millimetres. This measurement refers to the internal distance between the two attachment points of the strap to the lug shoulders. It is essential to verify this dimension before purchasing an aftermarket strap to ensure precise fitting without any play.

What is the best strap for the Staudt Praeludium Automatic P21.022-A02?

The best strap depends on intended usage and personal preference. For formal and elegant occasions, we recommend alligator in vegetable tanning or shell cordovan, materials that develop natural patina over time. For versatile daily wear, vegetable-tanned brushed calf offers an excellent balance between aesthetics and practicality. For casual sporting contexts, a technical polyamide NATO strap or FKM rubber maintains stylistic integrity without compromise.

How do I change the strap on my Staudt Praeludium Automatic?

To change the strap, remove the spring bars (barrettes) that fix the strap to the lug shoulders using a spring bar tool. Insert the tool into the small lateral opening of the barrette, gently push to release the internal spring, then extract the barrette. Repeat on the other side. Insert the spring bar of the new strap, ensuring it clicks firmly into place. If uncertain about the procedure, consult a professional watchmaker.

Are Milano Straps aftermarket straps compatible with the Staudt Praeludium Automatic?

Yes, all 22-millimetre (lug width) straps available on Milano Straps are compatible with the Staudt Praeludium Automatic P21.022-A02. The artisanal straps offered, in alligator, vegetable-tanned calf, shell cordovan, NATO and technical rubber, are manufactured to elevated quality standards and can be customised according to your aesthetic and functional preferences.

How long does a leather strap last on the Staudt Praeludium Automatic?

The lifespan of a leather strap depends on material quality, frequency of wear and environmental conditions (humidity, perspiration, sun exposure). A high-quality vegetable-tanned strap, worn daily, has an average life of 3–5 years before replacement is needed. The natural patina that develops is part of the material's beauty. Technical rubber and NATO straps have greater longevity (5–10 years), whilst alligator and cordovan, if properly maintained, can exceed 10 years.

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