Development of an electrostatic induction generator began in 2009. Since it was known that the electrostatic induction mechanism had the advantage of being highly resistant to magnetic fields, the development of a motor was also initiated in 2015. As a result, Cal.NS30 movement, equipped with an electrostatic induction generator/motor, was developed. ACCUTRON SPACEVIEW 2020, equipped with this movement, was launched to commemorate the 60th anniversary of the release of the “ACCUTRON”. The technical outline of the Cal.NS30 movement is reported as below.

  The authors developed the Cal. 9RA as the next generation of the Cal. 9R6, which has been the core caliber of automatic SPRING DRIVE since 2004, aiming for higher accuracy, lower profile, and longer duration time. The Cal. 9RA movement has a low-power temperature compensation circuit and a VACUUM PACKAGED IC to reduce the effects of temperature and humidity to ±10 s/month. Cal. 9RA also features a thickness of 5.0 mm and a duration of 120 hours thanks to the use of a DUAL SIZE BARREL and an OFFSET MAGIC LEVER.