Bulgari · Octo

Strap for Octo Finissimo Chronograph GMT Design Edition

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

Integrated bracelet

The Bulgari Octo 103673 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 diameter42 mm
Reference103673
FamilyOcto
MovementBulgari caliber BVL 318 hours, minutes, small seconds, Additional 24 hours Hand (adjustable) | Chronograph, column wheel
Year2022
CaseTitanium

Spring bar

Swiss Standard universal spring bars

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

The Octo 103673, seen from the bench

Bulgari Octo Finissimo Chronograph GMT Design Edition, 42.00 mm titanium case. Custom strap attachment crafted by Atelier Casati Milano for integrated bracelet compatibility. Conceived in 2012, the octagonal architecture combines Roman geometry with circular time. Available in Mississippi alligator or aged Barenia leather from private reserves.

Frequently asked questions

Can I fit a standard strap onto the Bulgari Octo 103673?

No. The bracelet is integrated into the case — there are no lugs where you can attach a traditional strap. I've seen many owners attempt DIY solutions, and I don't recommend them. The right approach is to have a bespoke strap built at the atelier, shaped to the specific geometry of your case.

How does the bespoke strap process work for the Octo?

We work by appointment only at the <a href="/pages/casati-booking">Atelier Casati Milano</a>. I bring the watch with me and take measurements directly from the case — the angles, the transitions, the exact position where the strap must embrace the titanium. Every piece is hand-constructed with this specific watch in mind.

Which leather would you recommend for the Bulgari Octo?

I prefer Mississippi alligator. The Octo is both sporty and contemporary despite its geometric elegance: alligator — with its dark, assertive texture — speaks well with titanium without softening its character. If you want warmth and contrast, aged Barenia is my second choice: it takes time beautifully and tells a story.

How long does a well-made strap last?

With leathers from our private reserve, 5 to 10 years of regular wear. Titanium is lightweight, so it reduces accelerated wear from weight. Quality depends on care — avoid direct rain, let the leather breathe. Barenia ages particularly well: it becomes softer, more beautiful. That's not degradation, that's patina.

The Octo was conceived in 2012: why this octagonal geometry?

Bulgari chose the Roman octagon — that's a matter of principle, not trend. The octagon allows an ultra-lightweight titanium case without losing structural rigidity: each angle does work. The integrated bracelet continues that geometric logic. It's not decorative: it's architecture that functions.

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