MB&F · Horological Machines

Strap for Horological Machine N°6 Alien Nation HM6 Blue

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

Integrated bracelet

The MB&F Horological Machines 60.STBL.B 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 diameter50 mm
Reference60.STBL.B
FamilyHorological Machines
MovementMB&F caliber HM6 hours, minutes | tourbillon escapement
Year2017 - 2017
CaseTitanium, Sapphire

Spring bar

Swiss Standard universal spring bars

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

The Horological Machines 60.STBL.B, seen from the bench

The HM6 is part of MB&F's Horological Machines collection, characterized by a futuristic design inspired by spacecraft. The timepiece is powered by the MB&F HM6 caliber with a tourbillon escapement and hours and minutes indication. The 60.STBL.B reference features a three-dimensional construction with sapphire crystal domes protecting the movement.

Frequently asked questions

Can you fit a standard strap on the MB&F Horological Machines 60.STBL.B?

No. The bracelet is integrated into the case: there are no standard lugs where you can attach a conventional strap. The architecture of this wrist vessel demands completely bespoke work. That's what I do in the atelier—I build the strap directly onto the case, studying every curve of its geometry.

How does the bespoke strap process work for this model?

Work is done exclusively at <a href="/pages/casati-booking">Casati Milano</a>, by appointment only. I bring the case in hand, take measurements directly from the titanium and sapphire surfaces, and craft attachments that dialogue with its sculptural form. No compromise, no approximation.

Which leather do I recommend for the MB&F Horological Machines 60.STBL.B?

Mississippi Alligator. It has the structure and visual presence this radical case deserves. Titanium and sapphire demand leather that holds its own visually, not something that fades away. Alligator carries that rebellious character breathing the same creative freedom as the vessel itself.

How long does a well-made strap last on this case?

With conscious wear and regular cleaning, eight to ten years at least. Leather ages beautifully, developing a patina that tells the story of time at the wrist. The key is not to deliberately soak it and let it breathe. Then comes the moment to bring it back to the atelier for regeneration or replacement.

Why is the MB&F Horological Machines 60.STBL.B so different from traditional watches?

Because Maximilian Büsser refused the rules. A 50mm sphere, rotating turbines visible, a case that looks like it came from unknown space. This isn't watchmaking—it's wearable sculpture. The strap cannot be a passive accessory. It must hold this radicality.

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