Montblanc · Star 4810

Strap for Star 4810 Chronograph

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter44 mm
Reference102376
FamilyStar 4810
MovementETA caliber 7750 hours, minutes, small seconds | date, day | Chronograph
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 Star 4810 102376

Selected for the 19 mm lug width · workshop selection

All 19 mm straps →

The Star 4810 102376, seen from the bench

The Montblanc Star 4810 chronograph features a 44mm stainless steel case with a visible ETA 7750 movement, recognized as one of the most appreciated chronographic calibres in watchmaking history. The 19mm lug width offers intermediate proportions between elegant and sports models, maintaining harmonious balance. With column wheel, anchor escapement, and 28,800 vibrations per hour, this timepiece combines technical precision with cosmopolitan elegance.

Frequently asked questions

What is the lug width of the Montblanc Star 4810 102376?

The Montblanc Star 4810 102376 features a lug width of 19mm. This specification is critical for selecting compatible straps. The lug width is measured by positioning a digital calliper between the inner points of both case lugs, without applying excessive pressure.

What is the best strap for the Montblanc Star 4810 102376?

There is no universally optimal strap, as the choice depends on intended use and aesthetic preference. For formal contexts, we recommend alligator leather with vegetable tanning in dark shades or Italian chrome-tanned calf. For sports-oriented wear, high-tenacity polyamide NATO straps in grey or navy blue are appropriate. For humid environments, FKM rubber ensures tactical reliability.

How do I change the strap on the Montblanc Star 4810 102376?

The strap is replaced by removing the spring bars connecting the strap to the case lugs. Using a dedicated spring bar tool, push the small elastic pin horizontally to disengage the vertical bar. Extract the bar downwards, remove the old strap, insert the new one, and re-insert the bar ensuring it locks securely on both sides of the case.

Is an aftermarket 19mm strap fully compatible with the 102376?

Yes, any strap with a 19mm lug width is compatible with the Montblanc Star 4810 102376, provided the spring bars present on the strap match the original timepiece specifications (same diameter and length). We recommend artisanal straps supplied with replacement pins or manufactured specifically for this lug width.

How long does a leather strap last on the Montblanc Star 4810?

Strap longevity depends on tanning method, frequency of wear, and climate conditions. An alligator leather with vegetable tanning, worn daily in temperate conditions, maintains structural integrity for 3–5 years; Italian chrome-tanned calf typically lasts 2–4 years. Constant exposure to humidity, saltwater perspiration, and UV radiation accelerates deterioration. Regular rotation amongst multiple straps significantly extends each strap's lifespan.

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