The Brilliant Engineering Behind Seiko's Spring Drive

If you think a mechanical watch can never keep time like a computer chip, this Japanese movement will change your mind. While the whole industry spent 300 years perfecting the ticking escapement, one engineer threw it out entirely, and built a watch with no battery, no tick, and quartz-level accuracy, powered by nothing but a coiled steel spring that pays for its own electricity. He spent 28 years on it, watched his company cancel it twice, and died a year before it ever reached a customer. Copyright Disclaimer We do not fully own the material compiled in this video. It belongs to individuals or organizations that deserve respect. We use under: Copyright disclaimer section 107 of the Copyright Act 1976. "fair use" is allowed for purposes such as criticism, comment, news reporting, teaching. scholarships and research.