The Rolex caliber 4130 is a truly legendary movement. When being launched in 2000, it became the first in-house Daytona movement. It also marked their first new caliber for 50 years. Still to this day, the Daytona caliber is a technical feat, which incorporates lots of clever technology and inventions that help improve the reliability and accuracy of the movement.
The Rolex caliber 4130 is reliable, robust, accurate, and historically important for the brand.