With the introduction of the RM 004 in 2004, after more than five years of development to perfect it, Richard Mille launched a new generation of split-seconds chronograph watches.  It features a carbon nanofibre tonneau shaped case that is 42 x 50mm in surface with a sapphire crystal on the back. The dial is skeletonized with white Arabic numerals, two small sub-dials, and an inner black tachymeter bezel. It features a function indicator which makes it possible to identify the winding, neutral and hand-setting positions as the crown is pulled out. Powered by the Calibre RM004-V3 manual winding movement and 70hrs power reserve, it is inlaid in a black rubber strap and torque limiting crown.