The Richard Mille RM 35-03 Automatic Rafael Nadal is a sophisticated timepiece featuring a new, patented complication known as the butterfly rotor. This innovation, developed over three years, allows wearers to interact directly with the rotor’s geometry, adjusting the watch’s winding speed according to their lifestyle and activity level. The butterfly rotor, composed of two grade 5 titanium arms with heavy metal segments, can change its position to either aid in winding the barrel or to suspend the winding process. This adjustment is done through a push-piece at 7 o’clock, offering practicality and interaction.