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Business man Chiara Ferragni spotted wearing Rolex

Chiara Ferragni, the famous Italian fashion blogger and entrepreneur, was recently spotted wearing a stunning steel and gold Rolex Cosmograph Daytona. This model, also known as the "Zenith Daytona," is named after the Zenith caliber 400 movement that Rolex used in its production.

What makes this watch so special is that it is one of the last five-digit Daytonas to feature the Zenith movement. In the 1980s and 1990s, Rolex bought the Zenith caliber 400 movement and modified some of its components to create the caliber 4030 movement.

However, Rolex introduced its own caliber 4130 movement in 2000, which was featured in the new generation of automatic Daytonas. This new movement was designed entirely by Rolex and offered improved reliability and accuracy.

If you're trying to determine whether a Daytona has a Rolex or Zenith caliber, you can easily do so by looking at the placement of the hour and running seconds counters. If the hours are located at 6 o'clock and the running seconds are at 9 o'clock, it is a Zenith caliber. If the hours are at 9 o'clock and the running seconds are at 6 o'clock, it is a Rolex caliber.

The Rolex Cosmograph Daytona ref. 16523 is a true icon in the world of luxury watches. With its stunning design, reliable movement, and rich history, it is no wonder that celebrities and watch enthusiasts alike are drawn to this timepiece. Chiara Ferragni's choice of wearing the Zenith Daytona only adds to its allure and mystique.