Zenith · Defy Extreme

Strap for Defy Extreme Double Tourbillon Yoshida White Gold

Takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width23 mm
Case diameter45 mm
Reference65.9100.9020 /21.l200
FamilyDefy Extreme
MovementZenith caliber El Primero 9020 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Tourbillon Escapement
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

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

The Defy Extreme 65.9100.9020 /21.l200, seen from the bench

The Zenith Defy Extreme Double Tourbillon Yoshida White Gold, reference 65.9100.9020/21.l200, is a 45mm chronograph in white gold embodying radical innovation. Powered by the El Primero 9020 movement, a centesimal chronograph with 1/100-second precision, tourbillon escapement, and date display, it represents haute horlogerie integrated into sports functionality. Water-resistant to 100 metres, the case features distinctive squared shoulders and dodecagonal bezel. The 23mm lug width reflects the case's architectural geometry without compromise.

Frequently asked questions

What is the lug width of the Zenith Defy Extreme 65.9100.9020 /21.l200?

The lug width of this model is 23mm. This dimension is specific to the 45mm case and requires careful selection of compatible straps. To verify the measurement, observe the distance between the two lugs on the case.

Which strap is most suitable for the Zenith Defy Extreme 65.9100.9020 /21.l200?

Black or anthracite alligator is the most coherent choice with the brutal aesthetics of this white gold watch. Shell cordovan represents an alternative for those who desire a patina that evolves over time. Vegetable-tanned leather offers a contemporary solution, whilst rubber with deployante is ideal for the most demanding uses.

How do I change the strap on my Zenith Defy Extreme 65.9100.9020 /21.l200?

To change the strap, use a spring bar tool or a fine pin. Position the tool in the lateral hole of the lug, apply gentle pressure to release the spring, and withdraw the lug. Repeat for the other lug and thread the new strap through.

Can I use an aftermarket strap on my Zenith Defy Extreme 65.9100.9020 /21.l200?

Yes, absolutely. Milano Straps offers artisanal straps compatible with the 23mm lug width, both ready-to-ship and bespoke. It is important to verify that the lugs are sufficiently robust to support the weight of the white gold case and that the passants are calibrated correctly to the 23mm width.

How long does a leather strap last on a Zenith Defy Extreme 65.9100.9020 /21.l200?

Durability depends on the material and usage. A quality artisanal alligator or shell cordovan strap, worn daily with care, lasts between 3 and 5 years before showing significant wear. Vegetable-tanned leather and rubber straps offer similar durability if maintained correctly. Casati Milano guarantees 18 months on bespoke straps.

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