Description

Revolving satellite complication with flyback minute hand.
The UR-210’s satellite complication with retrograde minute features a world-first indication – a winding efficiency pointer that indicates winding efficiency over the last two hours.

The UR-210 features a high-tech, oversized, three-dimensional retrograde minute hand. It encloses the hour satellite and indicates the time as it transverses the 0-to-60-minute scale. Then in less than 0.1 of a second the hand flies back to dock with the next hour satellite.

This lightning fast retrograde system is based on three key elements: a central axis set in ruby bearings ; a cylindrical marine chronometer type spring running vertically around the axis; a double coaxial star-shaped cam regulating the retrograde mechanism.

This genuine indication calculates the difference between energy consumed and energy created over the last two hours. If the indicator points towards the green zone, it is a sign that the mainspring is being replenished.