IWC · Da Vinci

Strap for Da Vinci Chronograph Platinum

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

24mm
Lug width24 mm
Case diameter43 mm
ReferenceIW3764-09 (aka: 3764-09, IW376409)
FamilyDa Vinci
MovementIWC caliber 89360 Hours, Minutes, Small Seconds | Date | Chronograph, Flyback
CasePlatinum

Spring bar

Swiss Standard universal spring bars

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

Straps for the Da Vinci IW3764-09 (aka: 3764-09, IW376409)

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Da Vinci IW3764-09 (aka: 3764-09, IW376409), seen from the bench

The Da Vinci Chronograph IW3764-09 is a platinum sports watch featuring a 43.10 mm case and a 24 mm lug width. Powered by the IWC caliber 89360 manufacture movement with flying chronograph, hours and minutes functions, small seconds, and date display. This timepiece represents the pinnacle of Swiss watchmaking tradition with its combination of technical innovation and aesthetic refinement.

Frequently asked questions

What is the lug width of the IWC Da Vinci IW3764-09?

The IW3764-09 is equipped with 24-millimetre lugs. This measurement is specific to Da Vinci chronograph models featuring flyback complications and substantial cases. To verify compatibility, use a digital calliper and measure the width between the lugs of your case, perpendicular to the case axis. The 24-millimetre specification ensures visual balance and functional stability on the wrist.

What is the best strap choice for a platinum IWC Da Vinci IW3764-09?

For a platinum case, alligator leather with a satin grain finish (Nile crocodile) represents the most refined option. Its regular texture dialogues elegantly with the cool silver of the metal. Sophisticated alternatives include shell cordovan for organic lustre, vegetable-tanned calf leather for reliable patina development, or a handmade NATO strap for sporting versatility. Your choice depends on intended use and aesthetic preference.

How do you change the strap on a chronograph watch such as the IWC Da Vinci?

Strap replacement is accomplished using a spring bar tool (featuring a dual-ended tip) or a small flathead screwdriver. Position the watch horizontally, locate the spring bars (pins) connecting the lugs to the case, and apply gentle outward pressure using the spring bar tool, working one pin at a time. Once the pins are extracted, the strap detaches. Install the new strap by reversing this procedure. For valuable watches, professional service is recommended.

Is a 24mm aftermarket strap compatible with the IW3764-09?

Yes, any strap with 24-millimetre lug width is mechanically compatible with the IW3764-09, provided the spring bars are aligned and the attachment is structurally sound. However, for a platinum watch of this calibre, artisanal straps crafted from noble materials (alligator, shell cordovan, vegetable-tanned calf) are strongly advised over generic alternatives. A quality strap amplifies the aesthetic dignity of the case.

What is the expected lifespan of a leather strap on a chronograph such as the IW3764-09?

Lifespan varies according to usage intensity, material type, and tanning method. Alligator or shell cordovan, when properly maintained, typically lasts 5–8 years under moderate daily wear. Vegetable-tanned calf leather offers similar longevity but develops patina more rapidly. In arid climates or with prolonged sun exposure, leather tends to stiffen prematurely. Quality artisanal straps, appropriately maintained (regular dusting, protection from moisture), age beautifully and may be refurbished. Casati Milano offers an 18-month warranty on every creation.

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