Seiko Watch Over time, that drive for accuracy and innovation yielded a few of the most advanced watch movements ever made. Spring Drive movements, a Grand Seiko invention, took a long time to develop and dozens of prototypes to perfect. Spring Drive movements combine a traditional mainspring with an electronic regulator, which brings the best of both quartz and mechanical watches. Power originates form the wearer’s actions because it does with mechanical watches, however timekeeping is regulated electronically for the ultimate in wearability and accuracy. Known for accuracy and innovation, Grand Seiko was created out of the desire to match and beat the standard of Swiss watches.