replica rolex lady datejust watches

The Rolex Cosmograph Daytona technically made its first appearance in 1963 as the Rolex Cosmograph. Equipped with a bezel engraved replica rolex lady datejust watches with a Tachymeter scale, the Cosmograph, or Le Mans, laid the foundation for what would later be known as the Daytona sports watch. It wasn’t until after Rolex became the official sponsor of the Daytona Speedway that the Cosmograph appeared with both the name “Daytona” on the dial and the Tachymeter bezel. Since its release, the Daytona has seen many bezel variations, including stainless steel and plastic in early references and, more recently, aluminum, ceramic, and white gold. The Tachymeter bezel’s primary function is to measure average speeds per hour while traveling, a feature that was initially developed by Rolex in a bid to become the official watch of NASA, hence its original name “Cosmograph”. Instead, Rolex’s iconic chronograph found its home among the world of professional driving, with the Tachymeter bezel being used primarily to measure driving speeds. Early references allowed the wearer to measure driving speeds of up to 200 kilometers per hour, while later references were replica rolex watches upgraded with a bezel that featured 400 graduations per hour. Through the years, Rolex has continued to improve upon the movement that powers the Daytona, evolving from such movements as the Zenith “El Primero” calibre 4030 movement to the Rolex calibre 4130 movement, which is made entirely in-house. The movement plays a crucial part in the accuracy of the bezel calculations.