RM 67-01 entered the Richard Mille collection in 2016. The thickness of the case was only 7.75mm. The movement created for RM 67-01 has been named the CRMA6 and is the sixth in-house developed calibre. The CRMA6 automatic movement is only 3.6mm thick. The numerals on the dial are created from solid metal and mounted on two linked and rigid titanium rails attached directly to the movement. To increase the impression of depth, each numeral is sculpted of solid metal and filled with white paint.

The machine tooling process involves 8 days of adjusting the machines for the bezel, 5 days for the caseband, and 5 days for the back bezel. Prior to this process, developing a methodology for carrying out this series of operations took 145 hours, the drawings for the tools 130 hours, and implementation 180 hours. Each case represents more than 215 separate machining operations.