New release review / Automatic winding

URWERK UR-300: a new geometry at every hour

The UR-300 Time Quantum uses two perpendicular hour modules, rebuilding the display as the hour changes.

Published 15 October 2026Announced 15 October 20262 min read

UR-300 Time Quantum Titanium — © URWERK · Image source

The essentials first

In one minute

Case45.2 × 58.8 × 18.25 mm

CalibreUR-30.01

Power reserve43 h

Why it is interesting

The transition between hours is the UR-300’s main attraction. That movement alone invites a closer look.

Things to consider

At 18.25 mm thick, fit needs a personal assessment; water resistance is limited to 30 metres.

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URWERK · UR-300 Time Quantum Titanium

The model in detail

URWERK introduced the UR-300 Time Quantum on 15 October. A T-shaped construction replaces the familiar satellite carousel: two linear modules carry four three-sided hour prisms. At the hour, a rapid forward jump rearranges the elements.

Titanium UR-300: the T-shaped hour construction under sapphire.
© URWERK · Source

The automatic UR-30.01 provides 43 hours of power reserve. Its 45.2 × 58.8 × 18.25 mm titanium case reveals the scale of the engineering: this is a substantial collector’s instrument with 30-metre water resistance.

Sources

URWERK — model pagewww.urwerk.com Dated coverage of the releasewatchesbysjx.com

In one minute

Why it is interesting

Things to consider

The model in detail

Sources

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