Zenith EL PRIMERO WINSOR ANNUAL CALENDAR - Swiss Luxury Chronographs
S temming from a cooperative endeavour between Zenith and the Musée International d’Horlogerie (MIH), the El Primero Winsor Annual Calendar model is a unique complication model offering a combination that is unique in the world: the most accurate series-made caliber beating at the exceptional frequency of 36,000 vibrations per hour - the legendary El Primero by Zenith - partnered with a useful and innovative annual calendar complication. The constructor behind it is none other than Ludwig Oechslin, curator of the Musée International d’Horlogerie in La Chaux-de-Fonds (Switzerland). This passionately dedicated individual has devised an annual calendar displaying the day of the week, the date and the month, while requiring only one adjustment per year. An annual calendar displaying the day of the week, the date and the month, while requiring only one adjustement per year The ...