Richard Mille dedicated this limited piece to Jamaican athlete Yohan Blake, an ambassador of the brand since 2012. The RM 61-01 Ultimate Edition Yohan Blake will be the last model in the RM 61-01 series and there will be only 150 pieces. The materials used for this special watch are Quartz TPT and Carbon TPT for the bezel and caseback, and Carbon TPT for the caseband. The layers of silica-based Quartz TPT are alternated with layers of Carbon TPT, as they are stacked by an automatic compiling system that changes the orientation of the fibers. Random patterns in the Quartz TPT are then revealed while milling and turning, making each piece unique.
The complete case construction is water-resistant to 50 meters, thanks to two Nitrile O-ring seals and is assembled using 20 spline screws in grade 5 titanium and 316L stainless steel washers. The case measures 50.23mm x 42.70mm x 15.84mm. A crown protector in Carbon TPT ensures that the crown is safe during sporting activities.