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Model review / Automatic winding

Bianchet Rotondo Diamond makes its US debut at WatchTime

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WatchTime New York hosts the Rotondo UltraFino Diamond, an automatic tourbillon with 40 baguette diamonds on its bezel.

Published 17 October 2026Announced 8 October 20262 min read

CREATIVE TIME editorial team · How this article was prepared

Rotondo UltraFino Diamond
Bianchet · Image source

The essentials first

In one minute

Case39,5 mm
CalibreUR01
Power reserve60 h

Why it is interesting

The thin automatic tourbillon remains the main technical attraction, while diamonds change the character of its frame.

Things to consider

5,000 g is the manufacturer's testing claim; it does not mean a watch with a gem-set bezel needs no careful handling.

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Bianchet · Rotondo UltraFino Diamond

The model in detail

Following its October 8 announcement, the Bianchet Rotondo UltraFino Diamond reaches the US public at WatchTime New York on October 16–18. This is an exhibition debut, rather than a new world premiere. Its Grade 5 titanium case combines with a white-gold bezel and 1.6 carats of baguette diamonds.

The 3.85 mm-thick UR01 calibre features a flying tourbillon and gold rotor. Power reserve is 60 hours, and the watch is water-resistant to 100 metres. The official price is CHF 92,500 before taxes; the manufacturer claims shock resistance up to 5,000 g.

Sources

Bianchet — Rotondo UltraFino Skeleton Diamondwww.bianchet.comWatchTime — Diamond's US debutwww.watchtime.com · 17 October 2026Timekeepers Club — original October 8 announcementtimekeepers.club · 8 October 2026

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