Grade 5 titanium has been massively used for the CRMT4 calibre that drives the RM 40-01. It introduces the first in-house development for a power reserve display as well as the oversize date and function selector complications. All of which are firsts at Richard Mille on an in-house automatic tourbillon.
See more at https://www.richardmille.com/collections/rm-40-01-automatic-tourbillon-mclaren-speedtail
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