Bulgari · Octo

Strap for Octo Velocissimo Titanium / Grey / Rubber

Takes 30 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width30 mm
Case diameter41 mm
Reference102859
FamilyOcto
MovementBulgari caliber BVL 328 hours, minutes, small seconds | date | Chronograph, column wheel
Year2018
CaseTitanium

Spring bar

Swiss Standard universal spring bars

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

The Octo 102859, seen from the bench

The Bulgari Octo 102859 features an octagonal titanium case measuring 41 mm in diameter, powered by the BVL 328 chronograph movement with column wheel. The 30 mm lug width accommodates the rubber strap, maintaining the design proportions established by Gérald Genta. This contemporary reinterpretation of the Octo family, redesigned in 2012, combines Roman heritage with architectural innovation.

Frequently asked questions

What is the lug width of the Bulgari Octo 102859?

The lug width of the Bulgari Octo 102859 is 30 millimetres. This measurement represents the distance between the centres of the two attachment pins on the case. It is essential to measure this precisely using a digital calliper, positioning it between the attachment holes, to ensure the strap is proportionate to the case dimensions.

What is the best strap for the Bulgari Octo 102859?

The best strap depends on intended usage. For a classical and refined approach, alligator leather with its natural texture creates an excellent aesthetic dialogue with the case's octagonal geometry. For daily wear, vegetable-tanned calf leather develops a patina that evolves over time, creating material continuity with the titanium case's patina. For sporty contexts or humid environments, a vulcanised rubber strap of watch-grade quality guarantees superior resistance and durability over time.

How do you change the strap on a watch with a 30mm lug width?

Strap change is accomplished using a specialised tool called a spring bar tool or strap removal pen. Insert the flat tip of the tool into the small space between the lug and the pin to release the internal spring's pressure. Once loosened, the pin slides out effortlessly. Repeat the procedure on the other side. To install the new strap, align the strap's holes with the pins and use the tool again to compress the internal spring, sliding the pin into position. Ensure the pin is fully seated before releasing tension.

Is an aftermarket strap compatible with the Bulgari Octo 102859?

Yes, any strap with a 30-millimetre lug width is compatible with the Bulgari Octo 102859, regardless of manufacturer. Compatibility is determined solely by lug width and the use of standard pins. Custom-made artisanal straps further permit personalisation of width, material, colour, initials, and stitching thread, creating a solution entirely tailored to your aesthetic preferences and wearability.

What is the lifespan of a leather strap for the 102859?

The lifespan of a leather strap varies based on material, tanning quality, and frequency of wear. A high-grade watch strap in alligator or calf leather, vegetable-tanned, typically lasts 3–5 years with daily use, developing a unique patina over time that increases aesthetic value. Durability also depends on exposure to ultraviolet rays, humidity, and perspiration: a strap used in humid environments will age more rapidly. A vulcanised rubber strap maintains structural integrity for 5–7 years, showing less material degradation than leather. The standard warranty for artisanal straps is 18 months.

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