REF. RM030, CASE NO. 163, CIRCA 2012

The movement of the RM 030 has remarkable chronometric performance due to a major innovation with the development and inclusion of a new declutching rotor system. It had long been a goal for the brand to implement a continuation of the torque sensor that was already in use in Mille’s tourbillon watches.

An extraordinary technical challenge, the aim of this innovation was to combine automatic clutching and declutching control of the winding system with a torque sensor, and therefore ensuring the optimum degree of spring tension for the perfect supply of torque to the movement. Four years in development, the declutching system ingeniously automatically disconnects the winding barrel from the winding mechanism when the spring is fully wound with a power reserve of 50 hours. This allows both the movement and the oscillator to work with the best ratio of constant torque/power so that it provides the best possible chronometric performance. When the power reserve winds down to 40 hours, the rotor is automatically clutched and the watch starts the winding phase until the indicator reaches 50 hours again. An indicator at 12 o’clock tells the wearer whether the rotor is operating in winding phase (on) or is disengaged (off).