It is to this day the world’s most accurate series-made chronograph. From tenths to hundredths of a second, a quantum leap in terms of performance and engineering.ġ969: Zenith made its stellar contribution to the chronograph saga with the El Primero (meaning ‘the first’ in Esperanto): an integrated automatic column-wheel mechanism beating at the high frequency of 36,000 vibrations/hour (5Hz) enabling it to reach chronometer-certified tenth of a second precision. The acknowledged champion of high-frequency chronographs, thanks to its fabled El Primero movement, Zenith shifts up to ultra-high accuracy with the Defy El Primero 21.
The world’s most accurate series-made chronograph in 1969 enters a whole new era. With its powerful 44 mm titanium case, Defy El Primero 21 becomes the master of extreme precision. Its double-chain structure is based on two regulators, made of Carbon-Matrix Carbon Nanotube composite, a patented new material that is insensitive to magnetic fields and temperature gradients to a degree well above existing norms. While remaining true to its legendary roots, the 21st century Defy El Primero flaunts standout performance: a certified in-house movement driving a hundredth of a second display by means of a central hand, with its unique and exclusive dynamic signature of one rotation per second.
Swiss watch manufacturer Zenith has a century and a half behind it and is resolutely taking its place in the third millennium with a new 100th of a second chronograph movement. The El Primero legend in the hundredths of a second age
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