Overview

Black ceramic and red gold, with Richard Mille’s first in-house chronograph

The RM 72-01 was released in 2020 and carries the CRMC1, the first chronograph movement developed entirely at Richard Mille’s Les Breuleux workshops, after 30 months of development. It replaced the RM 011, whose calibre combined a Vaucher base with a Dubois Dépraz module.

The photograph shows the black TZP ceramic execution with a 5N red gold caseband, red gold pushers and a black rubber strap. The card’s material line reads "White gold". Richard Mille produced the RM 72-01 in grade 5 titanium, 5N red gold, black TZP ceramic and white ATZ ceramic — white gold is not among them, and the case in the photograph is plainly ceramic and red gold.

Key details

Design and engineering

• Calibre CRMC1Skeletonised movement with automatic bidirectional winding, hours, minutes, small seconds, date, flyback chronograph, function indicator and stop seconds. It is 6.05 mm thick, comprises 425 components, runs on 39 jewels at 28,800 vph (4 Hz), and provides around 50 hours of power reserve regardless of how much the chronograph is used.
• Flyback chronograph with two oscillating pinionsPatented by Richard Mille and the first chronograph to use two oscillating pinions. The pinions are mounted on rockers actuated by a six-column wheel, and draw power directly from the barrel rather than through the timekeeping gear train, so that the chronograph’s three counters are supplied at the point where torque is greatest and the display is disengaged from the chronograph’s seconds wheel. Richard Mille specifies the arrangement as thinner than a vertical clutch and less sensitive to disturbance.
• Baseplate and bridgesGrade 5 titanium — 90% titanium, 6% aluminium, 4% vanadium — microblasted with a grey electroplasma treatment.
• Platinum rotorBidirectional and compact, allowing efficient winding within the movement’s height.
• Fast-rotating barrelOne revolution every five hours, which Richard Mille specifies for reduced periodic internal mainspring adhesion and smoother power delivery.
• Free-sprung balanceSpecified for reliability through shock and through movement assembly and disassembly.
• Tripartite case38.40 × 47.34 × 11.68 mm, water-resistant to 30 m via three nitrile O-ring seals, assembled with 20 grade 5 titanium spline screws and abrasion-resistant 316L stainless steel washers.

Specifications

Technical specifications

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