SINGAPORE: Absolute accuracy has always been the holy grail of horology. One route that the quest takes is to increase the vibration speed of a watch’s balance wheel, which makes a mechanical movement less susceptible to disruption by shock and gravity.
By Sonia Kolesnikov-Jessop
Published: December 12, 2008

While most mechanical watches have a movement ticking at 18,000 vibrations an hour, the record is held by a watch that beats at twice that speed, designed 40 years ago. The Zenith El Primero, an integrated automatic chronograph dating from 1969, has a balance wheel oscillation of 36,000 vibrations an hour, and is accurate to a tenth of a second.
“It’s moving so fast, your wrist can’t even catch up with the speed of the movement,” said Raphael Bertschy, head of product development at Zenith. “No one else has come up with a faster vibration yet – because it’s not that easy.”
But the Zenith El Primero’s 40-year-old record could soon be broken. Chopard Technologies has been testing a new movement that would have 72,000 vibrations an hour.
“Our ambition is to have a greater accuracy,” said Maxime Labey, the managing director of Chopard Asia. “Everybody is already thinking about the chronograph complication as the best implementation.”
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The race is on to build the world’s fastest watch – International Herald Tribune