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Montblanc · Star

Strap for Star Traditional Chronograph GMT Automatic Red Gold

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

Lug width

22mm
22 mm strapsAll Montblanc
Lug width22 mm
Case diameter42 mm
Reference101638
FamilyStar
MovementMontblanc caliber MB 25.03 Additional 24 hours Hand (adjustable), hours, minutes, small seconds | date | Chronograph
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Star 101638

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Star 101638, seen from the bench

The Montblanc Star 101638 is a Red Gold chronograph with a 42mm case and 22mm lug width, featuring the Montblanc Caliber MB 25.03 automatic movement. This timepiece combines a chronograph complication with a 24-hour adjustable hand and date function, representing contemporary Swiss watchmaking. The Red Gold case develops a characteristic patina over time, while the proportional 22mm lug width ensures balanced integration with the case.

Frequently asked questions

What is the lug width of the Montblanc Star 101638?

The Montblanc Star 101638 is equipped with a <a href="https://milanostraps.it/pages/termine-glossario/misura-ansa">lug width</a> of 22mm. This dimension is standard for the model and permits a broad selection of compatible straps, ranging from classical leather options to modern rubber or NATO fabric alternatives.

Which strap is ideal for the Montblanc Star 101638 in Red Gold?

To enhance the Red Gold case of the 101638, we recommend a <a href="https://milanostraps.it/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> leather strap in natural honey or cognac tone, which creates chromatic harmony through the warm contrast between the precious metal and the developing patina. Alternatively, a taupe calf or dark brown alligator offers formal versatility without aesthetic compromise.

How do you change the strap on a Montblanc Star 101638?

Strap removal is accomplished by extracting the lugs using a spring bar tool or watchmaker's knife. Position the tool within the lateral slot of the lug, apply gentle pressure to disengage it, then repeat on the opposite side. 22mm straps insert manually into the dedicated seats until the retention click is felt. We recommend performing this operation on a soft, flat surface to prevent scratches.

Is an aftermarket strap compatible with the Montblanc Star 101638?

Absolutely. The 101638, like most watches with a <a href="https://milanostraps.it/pages/termine-glossario/misura-ansa">22mm lug width</a>, accepts aftermarket straps of identical width. Verify that the lugs are straight rather than curved, and that the total length permits comfortable adjustment through 6-7 holes. Artisanal <a href="https://milanostraps.it/pages/termine-glossario/concia-vegetale">vegetable-tanned leather</a> straps represent a qualitative upgrade relative to standard OEM offerings.

How long does a leather strap last on a Montblanc Star 101638?

Leather strap longevity depends on frequency of use, tanning methodology, and environmental conditions. A superior-quality <a href="https://milanostraps.it/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> strap can remain functionally and aesthetically sound for 4-8 years under moderate-to-intensive use. Prolonged exposure to moisture and perspiration accelerates degradation, whilst periodic maintenance (protective cream application) extends serviceable life. The strap lugs, subject to mechanical stress during every change operation, represent the most probable failure point.

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