Sinn · Ladies Watches

Strap for Ladies Watches 243 Ti Z S

Takes 14 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width14 mm
Case diameter23 mm
Reference243.020
FamilyLadies Watches
MovementETA caliber 2671 Hours, Minutes, Seconds | Date
CaseTitanium

Spring bar

Swiss Standard universal spring bars

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

Straps for the Ladies Watches 243.020

Selected for the 14 mm lug width · workshop selection

All 14 mm straps →

Frequently asked questions

What is the lug width of the Sinn Ladies Watches 243.020?

The lug width of the 243.020 is 14 millimetres. It is measured as the distance between the inner edges of the two lugs (attachment points) of the case. This non-standard dimension makes it specific to this feminine model and incompatible with universal 16, 18 or 20mm straps.

What is the best strap for the Sinn Ladies Watches 243.020?

The ideal strap depends on usage: for formal elegance, an alligator with grain texture in warm colours (burgundy, cognac) creates a striking contrast with the silver-grey titanium; for daily wear, vegetable-tanned calf leather develops a natural patina that humanises the austere geometry; for practicality, a heavy cotton-linen NATO or a satin-finished FKM rubber guarantees robustness and versatility.

How do I change the strap on my 243.020?

Strap replacement requires a spring bar removal tool and two free hands. Position the watch on a soft surface, insert the tool under the pin from the lower lug, lift gently and slide the pin out of the hole; repeat on the other side. To fit the new strap, thread one side of the bars into the upper lugs first, then use the tool to push the other side into the lower holes until you hear a click.

Are there quality aftermarket straps available for the 243.020?

Yes, artisanal straps in 14mm size guarantee quality superior to generic OEM replacements. The selection includes French alligator, European calf with vegetable tanning, NATO in Cordura canvas, and FKM rubber. Prefer brands that certify leather sourcing and adopt stainless steel or titanium buckles with corrosion resistance.

How long does a leather strap last on the Sinn 243.020?

A quality leather strap (alligator or vegetable-tanned calf) lasts 3–5 years with daily use, up to 7–8 years with seasonal rotation. Longevity depends on ambient humidity, direct sunlight exposure and cleaning frequency. Vegetable-tanned leather develops patina rather than degrading, increasing aesthetic value over time; alligator maintains structure more rigidly if protected from temperature extremes.

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