Seiko introduced the Spring Drive movement in 2005, after testing and development by a team of engineers led by Yoshikazu Akahane for 28 years! The developers of the new movement had 4 main objectives: Higher Accuracy - a new component called the "tri-syn...
Very few watch companies create a moonphase as elegant. And the SpringDrive mechanism is as mesmerizing as it is revolutionary. Thanks for reminding us of this.