Stowa · Flieger

Strap for Flieger Baumuster B

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

Lug width20 mm
Case diameter40 mm
ReferenceFlieger Baumuster B
FamilyFlieger
MovementETA caliber 2824-2 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 Flieger Flieger Baumuster B

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Flieger Flieger Baumuster B, seen from the bench

The Stowa Flieger Baumuster B represents the modern reinterpretation of the German pilot's watches of the 1940s. It houses the ETA 2824-2 automatic caliber with hour, minute, second and date indication. The lugs measure 20mm in width.

Frequently asked questions

What is the lug width of the Stowa Flieger Baumuster B?

The lug width of the Stowa Flieger Baumuster B is 20 millimetres. This measurement, taken between the inner edges of the attachment pins, determines compatibility with artisanal straps. To verify the measurement, use a digital calliper positioned perpendicularly between the two pins, ensuring you record the distance from inner edge to inner edge.

Which strap is most suitable for the Flieger Baumuster B?

For the Flieger Baumuster B, alligator represents the noblest choice: its natural grain imparts visual solidity and ages into amber hues. Vegetable-tanned calf leather is the refined alternative for those preferring smooth texture. For daily use, military canvas NATO straps ensure versatility and ease of replacement. Natural vulcanised rubber is ideal for severe use in humid environments.

How do I change the strap on the Stowa Flieger Baumuster B?

To change the strap, use a spring bar tool, inserting the bifid tip under the attachment pin. Apply gentle downward and lateral pressure to release the internal spring. Once the pin is removed, extract the old strap. Position the new strap aligning the eyelets with the pins, then reinsert the pin carefully until you hear a click indicating secure seating.

Is an aftermarket strap compatible with the Flieger Baumuster B?

Yes, any strap with a 20-millimetre lug width is compatible with the Flieger Baumuster B. Always verify the width stated in the strap's technical specifications: 20mm ensures perfect fit without excessive play or pressure on the lugs. Premium artisanal straps, crafted in alligator or calf leather, guarantee aesthetics coherent with the watch's military heritage.

How long does a leather strap last on the Flieger Baumuster B?

A quality leather strap (alligator or vegetable-tanned calf) typically lasts 3–5 years under regular daily wear conditions. Longevity depends on intensity of use, humidity exposure, and maintenance. Periodic cleaning with a damp cloth and occasional application of balm preserves elasticity. Natural ageing of leather is part of its beauty, creating unique patina over time.

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