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: In 1997 , a new low-power integrated circuit (the SOI-IC) finally allowed the watch to consume less power than it produced.

: Akahane presented the technology at Baselworld in 1998, but he passed away later that year at age 52, never seeing the first commercial release in December 1999. 3. How It Works: The Tri-Synchro Regulator buy seiko spring drive

Making this "braking" system work without a battery was thought to be impossible. : In 1997 , a new low-power integrated

: The first prototype in 1982 ran for only four hours. A second attempt in 1993 achieved about 24 hours but was still commercially unviable. : In 1997