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Zenith · Chronomaster Sport

Strap for Chronomaster Sport Yoshida Yellow Gold / Green / Bracelet

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Zenith Chronomaster Sport 30.3100.3600/56.M3100 is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

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Case diameter41 mm
Reference30.3100.3600/56.M3100
FamilyChronomaster Sport
MovementZenith caliber El Primero 3600 hours, minutes, small seconds | date | Chronograph, column wheel
Year2023
CaseYellow 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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The Chronomaster Sport 30.3100.3600/56.M3100, seen from the bench

The Zenith Chronomaster Sport is equipped with the automatic El Primero 3600 caliber with chronograph function and column wheel. The movement offers indication of hours, minutes, small seconds, and date. The reference 30.3100.3600/56.M3100 is part of the Swiss brand's sports collection.

Frequently asked questions

Can I fit a standard strap on the Zenith Chronomaster Sport 30.3100.3600/56.M3100?

No, the bracelet is integrated into the case. The lug attachment is not a standard one, so a commercial strap won't fit. In the atelier, I build the strap bespoke, working directly on the specific geometry of your case.

How does the bespoke strap work for this model?

Come to <a href="/pages/casati-booking">Casati Milano</a>, by appointment. I take measurements straight from your case, study the attachment, and craft the strap so it fits perfectly. It's not assembly—it's true construction.

Which leather do you recommend for the Chronomaster Sport?

Mississippi alligator. This yellow gold deserves a leather that ages with elegance and resilience. Alligator has a gentle grain, never competing. It works with the precious metal, not against it.

How long does a well-made strap last?

It depends on use and care. Good alligator or barenia lasts 8–12 years of daily wear. Leather improves with time, develops patina. If you keep it away from constant water and nourish it occasionally, it lives even longer.

Why does the Chronomaster Sport have an integrated bracelet?

It's a design choice that echoes the 1969 A386 legacy. The three-link integrated bracelet makes the case and bracelet a single architecture. It's not a compromise—it's a statement. That's why a strap must be built respecting that geometry.

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