Technical Archive

Bulgari
Octo 103707

Bulgari Octo 103707: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Octo Finissimo Automatic Tattoo Acqua

Technical Specifications

Bulgari 103707
Reference

103707

Movement

Bulgari caliber BVL 138 Hours, Minutes, Small Seconds

The Heritage

The Octo represents one of Bulgari's contemporary collections characterized by the distinctive octagonal case design. The movement is the Bulgari BVL 138 caliber providing hours, minutes and small seconds indication. The reference 103707 maintains the geometric architecture typical of the Octo line.
Made to Measure

The strap for this watch is made to measure

On the Bulgari Octo the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.

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FAQ

Can a standard strap be mounted on the Bulgari Octo 103707?

No, the Bulgari Octo 103707 features an integrated attachment within the case that does not accommodate standard straps with straight bars. The solution is a strap custom-built directly on the watch, handcrafted at <a href="/pages/casati-booking">Casati Milano</a>. It is not a compromise, but the only design approach coherent with the case architecture.

How exactly does the custom strap work for this model?

During a consultation at <a href="/pages/casati-booking">Casati Milano</a>, the craftsman examines the watch, takes precise measurements of the space between the lugs, and studies the octagonal geometry of the case. The strap is then handcrafted in the atelier with stitching and finishing done entirely by hand, ensuring that the ends fit perfectly to the case without compromising the aesthetic integrity of the design.

What type of leather suits the character of the Bulgari Octo 103707?

Nappa leathers with compact surfaces and soft feel are ideal, as they reflect the geometric purity of the case without distraction. Vegetable-tanned leathers with calibrated patina also work well, developing chromatic depth over time. Recommended colours are evolved neutrals—blacks, dark brown, taupe—that create an architectural frame around the watch.

How long does a well-crafted artisanal strap last?

A strap handcrafted at <a href="/pages/casati-booking">Casati Milano</a> using traditional techniques and premium leathers lasts for years, often a decade or more with proper care. Hand stitching and leather quality guarantee durability superior to industrial straps, and the leather's ageing adds character over time.

Why does the Bulgari Octo 103707 reject conventional straps?

The octagonal titanium case of the Bulgari Octo 103707 is an integrated architecture where bracelet and case dialogue according to a unified constructive logic. A standard strap with straight bars not only does not fit, but betrays the design principle of the model. Only custom construction, engineered for this specific geometry, honours the contemporary design intention of the Octo.

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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By appointment only · Milan

The atelier's website: casatimilano.com