Technical Archive

Urwerk
UR-110 UR-110 Ebony

Urwerk UR-110 UR-110 Ebony: strap made to measure on the watch at the Casati Milano atelier, by appointment.

UR-110 Eastwood Macassar Ebony

Technical Specifications

Urwerk UR-110 Ebony
Reference

UR-110 Ebony

Movement

Urwerk caliber UR 9.01 Hours, Minutes, Small Seconds

The Heritage

The URWERK UR-110 Ebony features an asymmetrical titanium and red gold case with a revolutionary satellite system of four rotating cubes orbiting across a minute scale. The UR-110 represents avant-garde watchmaking engineering with its distinctive sculptural form and complex integrated lug attachment. Custom tailored strap work is available through Atelier Casati Milano.
Made to Measure

The strap for this watch is made to measure

On the Urwerk UR-110 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.

Book a consultation →

FAQ

Can I fit a standard strap on the Urwerk UR-110 Ebony?

No, the bracelet is integrated into the case. The lug attachment is non-standard: a conventional strap won't fit. For this watch, I craft a bespoke strap directly on the UR-110, shaping every detail to the asymmetric geometry of the case.

How does the bespoke strap process work for the UR-110 Ebony?

You'll visit the atelier. <a href="/pages/casati-booking">Casati Milano</a> works by appointment only. I take measurements directly from the case, study the tilt of the titanium and red gold, and model the strap so everything dialogues together.

Which leather do I prefer for this watch?

Mississippi Alligator in black. Its fine surface doesn't compete with the sculptural forms of the UR-110, and it ages with deep patina without stealing focus. The watch's asymmetry deserves leather that knows how to step back.

How long does a well-made strap last?

It depends on wear and care. A bespoke quality leather strap will travel with you for 8–10 years, if you treat it with respect. Leather ages and develops character. Sometimes a damp cloth is enough. If you care for it, the strap tells the story alongside the watch.

Why does the UR-110 Ebony demand a handmade approach?

Because its satellite system isn't just technique—it's architecture. The asymmetric case in titanium and red gold has no precedent. An industrial strap erases Urwerk's work. In the atelier, I build around that vision, not against it.