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-A01
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-A01

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Praeludium Automatic P21.022-A01, seen from the bench

The Staudt Praeludium Automatic P21.022-A01 is a 42.50mm stainless steel case watch with a 22mm lug width, powered by the ETA caliber 2892-A2 automatic movement. This independent German timepiece from Pforzheim's manufacture features 316L stainless steel for enhanced corrosion resistance, a mineral crystal, and threaded crown for everyday water resistance. Functions include hours, minutes, seconds, and date display. The 22mm lug width balances the case diameter and maintains visual proportion without adding unnecessary weight to the wrist.

Frequently asked questions

What is the lug width of the Staudt Praeludium Automatic P21.022-A01?

The lug width of the Staudt Praeludium Automatic P21.022-A01 is 22mm. This measurement is taken between the lug holes from inner shoulder to inner shoulder. This is a widely adopted standard that ensures extensive availability of compatible artisanal straps.

What is the best strap for the Praeludium Automatic P21.022-A01?

The ideal strap depends on intended use. For daily elegance, we recommend vegetable-tanned calf leather in dark brown tonality. For maximum formality, black calf or shell cordovan. For marine environments or sporting activities, black FKM rubber. NATO straps in grey-blue offer contemporary versatility without aesthetic compromise.

How do you change the strap on a Staudt Praeludium Automatic watch?

To change the strap, you'll need a spring bar tool or small flat screwdriver. Position the watch on a stable surface, locate the small hole on the lug shoulder, insert the tool and apply gentle pressure until the pin slides out. Repeat for the opposite lug, then insert the new spring bars into the new strap. Consult a watchmaker if unfamiliar with the procedure.

Is an aftermarket strap compatible with the Praeludium Automatic P21.022-A01?

Yes, any strap with a 22mm lug width is compatible with the P21.022-A01. Verify that the spring bars are standard diameter. We recommend artisanal leather straps with vegetable tanning, shell cordovan, or FKM rubber from specialised suppliers that guarantee manufacturing quality.

How long does a leather strap last on this watch?

Durability depends on material and usage. A vegetable-tanned calf strap typically lasts 2-3 years with daily wear, developing a natural patina appreciated by connoisseurs. Shell cordovan resists 4-5 years due to superior density. To extend lifespan, avoid direct and prolonged water exposure and allow air drying. FKM rubber has superior longevity (5-7 years) as it does not degrade to moisture.

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