Zenith · Defy

Strap for Defy 21 Ultra Colour Pink

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

Lug width23 mm
Case diameter44 mm
Reference97.9001.9004/80.R948.T3/P
FamilyDefy
MovementZenith caliber El Primero 9004 hours, minutes, small seconds | Chronograph | chronometer, power reserve indicator
Year2023
CaseTitanium

Spring bar

Swiss Standard universal spring bars

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

The Defy 97.9001.9004/80.R948.T3/P, seen from the bench

The Zenith Defy features the El Primero 9004 caliber with chronograph, power reserve indicator and chronometer certification. The movement offers hours, minutes, small seconds and chronograph. 23mm lugs for the strap.

Frequently asked questions

What is the lug width of the Zenith Defy 97.9001.9004/80.R948.T3/P?

The lug width of the Zenith Defy 97.9001.9004/80.R948.T3/P is 23 millimetres. This measurement represents the effective distance between the case lugs where the strap attaches. Accurate measurement requires a digital calliper positioned precisely between the two attachment points, distinct from the case diameter itself.

Which strap is most suitable for the Zenith Defy 97.9001.9004/80.R948.T3/P?

For the Defy 97.9001.9004/80.R948.T3/P, natural alligator leather offers the most sophisticated choice, creating compelling material contrast between the skin's grain and the brushed titanium case. Alternatively, vegetable-tanned calf or shell cordovan provide superior durability and evolving patina with age, ideal for intensive daily wear. Selection depends on intended use: natural leather for sporty elegance, cordovan for generational longevity.

How do I change the strap on my Zenith Defy 97.9001.9004/80.R948.T3/P?

To change the strap, remove the spring bars connecting the strap to the lugs using a dedicated pin pusher tool or small lever. Push the bar inward to release tension, then extract the old strap. Align the new strap with the attachment points and reinsert the spring bar until it clicks into place. Handle with care to avoid scratching the titanium case.

Can I use an aftermarket strap with the Zenith Defy 97.9001.9004/80.R948.T3/P?

Yes, any strap featuring standard 23-millimetre attachments is fully compatible with the Defy 97.9001.9004/80.R948.T3/P. At milanostraps.it, you'll find a curated selection of handcrafted leather, rubber, and technical material straps, all customised to your exact specifications for precise fit and comfort.

How long does a leather strap last on the Zenith Defy 97.9001.9004/80.R948.T3/P?

Strap longevity depends on material quality and usage patterns. Standard calf leather: 3-5 years with moderate daily wear. Natural alligator: 5-8 years. Shell cordovan: 8-12 years due to superior material density. Factors reducing lifespan include prolonged water exposure, salt sweat, and constant friction. A well-maintained strap can significantly exceed these estimates.

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