Technical Archive

Patek Philippe
Nautilus 7118/1A-010

Patek Philippe Nautilus 7118/1A-010: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Nautilus 7118 Stainless Steel / White

Technical Specifications

Patek Philippe 7118/1A-010
Reference

7118/1A-010

Movement

Patek Philippe caliber 324 S C Hours, Minutes, Seconds | Date

The Heritage

The Nautilus ref. 7118/1A-010 is a 35.2mm stainless steel women's watch designed by Gérald Genta in 1976, embodying refined sports watchmaking. The model features the iconic octagonal integrated case and bracelet architecture with distinctive porthole design. Its geometric purity and elegant lines represent timeless haute horlogerie craftsmanship.
Made to Measure

The strap for this watch is made to measure

On the Patek Philippe Nautilus 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 standard strap be fitted to the Patek Philippe Nautilus 7118/1A-010?

No. The bracelet is integrated into the case with a proprietary attachment: no standard aftermarket strap clips on directly. For this reason I always work in the atelier, building the attachment by hand on the physical watch. It is the only way to achieve a clean result.

How does the bespoke strap service work for this Nautilus?

Everything goes through <a href="/pages/casati-booking">Casati Milano</a>, by appointment only, at Via XX Settembre 15 in Milan. I take the watch to the bench, measure directly from the case and shape the attachment by hand, tenth of a millimetre at a time. I do not work from photographs or spec sheets: the watch needs to be in front of me.

Which leather do you recommend for this model?

For the Nautilus I choose aged Barenia, without hesitation. The satin and polished steel of this case calls for a leather with its own character, one that changes over time rather than staying anonymous. Barenia develops a patina that works with the metal in a natural way, without overpowering it. It is the right leather for a sports watch that does not sacrifice elegance.

How long does a well-made leather strap last?

Five, even eight years with regular wear, provided the leather is of good quality and properly cared for. A few simple habits are enough: keep it away from prolonged contact with water, let it breathe after an intense day, apply a little neutral cream once a year. Good leather does not deteriorate — it ages, and with time it becomes more interesting.

Is the Nautilus really an everyday watch, or is it better saved for special occasions?

Gérald Genta designed it in 1976 precisely to break that distinction: steel case, sporting soul, yet built to the standards of fine watchmaking. I have seen Nautilus watches worn every day for years, and they hold up. The stainless steel is robust, and the octagonal case geometry is built to last. Keeping it locked away would be a shame.

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