Richard Mille RM 011

The RMAC1 is an automatic flyback chronograph caliber manufactured by Richard Mille. Introduced in 2007, it features a skeletonised base with variable-geometry rotor, annual calendar, oversized date, 60-minute countdown, and 12-hour totalizer. Developed with Vaucher, it debuted in the Felipe Massa and became one of the brand's most widely produced movements, appearing in multiple special editions.