e best of both worlds

Spring Drive is horological marvel that, at long last, combines all that is best in both mechanical and electronic watchmaking. It delivers the ±1 second per day precision that, until Spring Drive, only durability of the traditional automatic watch. e simplicity of this “fusion” idea is belied by the innovative intricacy of the solution. Every component of a Spring Drive movement is made in-house and there are over 200 in the three hands movements, while the Spring Drive chronograph women who work with parts made to tolerances of less than one hundredth of a millimeter.

Spring Drive is horological marvel that, at long last, combines all that is best in both mechanical electronic watchmaking. It delivers the ±1 second per day precision that, until Spring Drive, only durability of the traditional automatic watch. e simplicity of this “fusion” idea is belied by innovative intricacy of the solution. Every component of a Spring Drive movement is made in-house and there are over 200 in the three hands movements, while the Spring Drive chrono women who work with parts made to tolerances of less than one hundredth of a millimeter.

Tri-Synchro Regulator

Tri-Synchro Regulator

e core challenge for Ak ahane and his team in the development of Spring Drive was energy generation and management. e solution lay in the creation of the Tri-Synchro Regulator, a device that generates a tiny electrical pulse from the motion of the mainspring and converts it into the power needed to activate a crystal oscillator and an electronic brake. e oscillator transmits a precise reference signal to the IC which applies a magnetic br to maintain the revolution speed of a glide wheel at exactly eight revolutions a second. is precision is transferred through a gear train to the hands which display the time to a precis per day.

e core challenge for Ak ahane and his team in the development of Spring Drive was energy generation and management. solution lay in the creation of the Tri-Synchro Regulator, a that generates a tiny electrical pulse from the motion of the spring and converts it into the power needed to activate a crystal oscillator and an electronic brake. e oscillator transmits precise reference signal to the IC which applies a magnetic to maintain the revolution speed of a glide wheel at exactly revolutions a second. is precision is transferred through train to the hands which display the time to a precision of ±1 per day.

A seconds hand that moves in glide motion

A seconds hand that moves in glide motion

Because all the motion within a Spring Drive movement is in one direction, the seconds hand moves in glide motion. Just like time itself, the seconds hand moves continuously and silently with no in every second that it marks.

Because all the motion within a Spring Drive movement is direction, the seconds hand moves in glide motion. Just like itself, the seconds hand moves continuously and silently with in every second that it marks.

A chronograph of the highest precision

its measurement of elapsed time as it achieves with time of day and so is the most accurate chronograph in the history of the spring-driven watches. Furthermore, with the vertical clutch and column wheel systems for exact operation, the precision of the chronograph is further enhanced and the glide motion of the chronograph seconds hand assures that the chronograph stops at the exact moment that the button is depressed and not just at the nearest tick. Remarkably, Caliber R delivers a power reserve of up to 72 hours (approximately 3 days) even when the chronograph is in continuous use.

e Spring Drive 8 Day Power Reserve

To maintain perfect timekeeping for up to eight days (192 hours) requires greatly increased power, which is provided by a linked series of three barrels. is remarkable caliber R has also been friction between parts that would otherwise lead to loss in the transmission of the energy derived from the mainspring.

Torque Return System

When the mainspring has been fully wound and the torque output is at its highest, approximately 30% of the available power is not wasted in a normal movement.

e Torque Return System uses this energy to rewind the mainspring, resulting in an increase in the power reserve. In Caliber R has been fully wound.