Technical Archive

Patek Philippe
Twenty~4 4920G-010

Patek Philippe Twenty~4 4920G-010: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Twenty~4 4920 White Gold Timeless White

Technical Specifications

Patek Philippe 4920G-010
Reference

4920G-010

Movement

Patek Philippe caliber E15 Hours, Minutes

The Heritage

The Twenty~4 was launched by Patek Philippe in 1999 as a rectangular-shaped ladies' watch. It is powered by the E15 quartz caliber with hour and minute indication. The reference 4920G-010 features a white gold case with an integrated bracelet.
Made to Measure

The strap for this watch is made to measure

On the Patek Philippe Twenty~4 the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.

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FAQ

Can a strap be fitted to the Patek Philippe Twenty~4 4920G-010?

Not in the traditional sense. The bracelet is integrated into the case: there is no standard lug to attach a ready-made strap. The only way forward is to build a bespoke attachment directly on the watch, at the atelier.

How does the bespoke strap process work for this model?

I work exclusively through <a href="/pages/casati-booking">Casati Milano</a>, by appointment, at Via XX Settembre 15 in Milan. I bring the watch to the bench, take measurements from the case itself, and build every attachment millimetre by millimetre. There is no other way: each Twenty~4 has its own geometry, and I respect that.

Which leather do you recommend for the Twenty~4?

For a watch with such a precise and structured architecture, I prefer Mississippi Alligator: its regular grain works well with the white gold case's integrated links. If you prefer something softer against the wrist, Premium Swift is my second choice, especially for all-day wear. Either way, the leather must be worthy of the case — no compromises.

How long does a well-made strap last?

With quality leather and proper construction, five years of daily wear is a starting point, not a ceiling. Care matters: avoid prolonged contact with water, and apply a little neutral cream each season. Alligator ages with character — over time it tells the story of the person who wore it.

Is the Twenty~4 intended only for formal occasions, or can it be worn daily?

That is precisely what I have always found interesting about this watch: the rectangular case and integrated links give it a precise but not rigid structure. It was launched in 1999 with the idea of accompanying an active woman, not just someone attending a dinner. I keep that in mind when I build the strap: it must be elegant, but not delicate.

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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By appointment only · Milan

The atelier's website: casatimilano.com