Bulgari · Octo

Strap for Octo Finissimo Tourbillon Platinum

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Bulgari Octo 102138 (aka: BGO40BPLTBXT) is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter40 mm
Reference102138 (aka: BGO40BPLTBXT)
FamilyOcto
MovementBulgari caliber BVL 268 Hours, Minutes, Seconds | Date
CasePlatinum

Spring bar

Swiss Standard universal spring bars

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

The Octo 102138 (aka: BGO40BPLTBXT), seen from the bench

The Octo represents one of Bulgari's contemporary lines characterized by the distinctive octagonal case. The model is powered by the automatic caliber BVL 268 with hours, minutes, seconds and date indication. Reference 102138 maintains the typical proportions of the collection with the characteristic angular geometry of the case.

Frequently asked questions

Can you fit a standard strap on the Bulgari Octo 102138?

No, the bracelet attachment is not a standard lug with straight bars, but a proprietary solution integrated into the case. A conventional strap will not fit. However, a strap exists: it is handcrafted bespoke at the <a href="/pages/casati-booking">Casati Milano</a> atelier, constructed specifically to your case's measurements.

How does the bespoke strap creation work for this model?

The Casati Milano atelier measures your case's proprietary attachment points, lug thickness and required length directly on the watch. The master craftsman creates the strap in leather using these precise measurements, fits it during construction, and refines it until fit and aesthetics are flawless. It is completely personalised work on your specific case.

What leather suits the character of the Bulgari Octo 102138?

The most coherent leathers are American alligator, Nile crocodile and fine-grain calf. These materials hold sharp, angular cuts that dialogue with the octagonal geometry of the case. Nile crocodile is ideal if you wish the strap to develop patina over time, creating a parallel narrative to aged platinum.

How long does a well-crafted artisanal strap last?

A strap made by Casati Milano using sartorial techniques and selected materials lasts for years, often decades. Longevity depends on daily wear, care in cleaning, and the natural ageing of the leather, which adds beauty to the piece. Unlike factory straps, these objects improve with time.

Why did Gerald Genta choose the octagonal shape for the Bulgari Octo?

The octagon echoes Roman geometry, a symbol of balance and harmony in classical tradition. Genta transformed this symbol into constructive architecture, where every edge and plane of the case communicates rigour and coherence. The number eight represents balance in numerology too – a conscious choice underlying the design philosophy.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only