Richard Mille RM 65-01 Automatic Split-Seconds Chronograph McLaren W1

The latest fruit of this partnership, unveiled in 2024, is the RM 65-01 McLaren W1—the fourth timepiece created jointly by the two brands. Its design draws inspiration from the supercar of the same name, with the case reflecting the vehicle’s aerodynamic lines and its "Aero-Cell" structural architecture. The bezel features a particularly intricate construction, crafted from Grade 5 titanium and Carbon TPT (Carbon Thin Ply Technology), with the titanium sections measuring as little as 0.5 mm at their thinnest points. Development began as early as 2022, when Richard Mille engineers first examined a full-scale clay model of the McLaren W1 at the McLaren Technology Centre.

At the heart of the watch lies the automatic RMAC4 movement—a split-seconds chronograph operating at a frequency of 5 Hz, capable of measuring intermediate times with a precision of one-tenth of a second. A standout feature is the rapid-winding mechanism—first introduced by Richard Mille in 2020 for the RM 65-01—which complements the automatic winding system. An orange pusher at the 8 o'clock position allows the mainspring barrel to be wound directly, without needing to manipulate the crown; approximately 125 presses will fully wind the watch, providing a power reserve of about 60 hours.

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Richard Mille and Ferrari
Creating ultra-thin movements has long been considered one of the greatest challenges in high-end watchmaking. As a watch becomes thinner, the architecture of its movement grows increasingly complex; components must be miniaturized, rearranged, or even entirely redesigned—all while ensuring the movement remains functional and chronometrically stable. In 2022, Richard Mille unveiled the RM UP-01 Ferrari—a limited edition of 150 pieces—which pushes the boundaries of what is possible in the realm of ultra-thin horology. Richard Mille RM UP-01 Ferrari Manual-Winding Ultra-Thin
This timepiece marks the first collaborative creation between Richard Mille and Ferrari since their partnership began in February 2021. Unlike previous collaborations—such as the one with McLaren—this partnership with Ferrari spans a broader spectrum of motorsport, encompassing not only Formula 1 (F1) but also the World Endurance Championship (WEC), GT racing, the Ferrari Challenge, the Ferrari Driver Academy, and esports. Furthermore, the research, development, and design teams from both companies worked in tandem to conceive the design philosophy for this new watch.

The RM UP-01 subverts traditional movement architecture. Rather than stacking components in layers, the movement’s parts are distributed across a larger surface area. To achieve this, the brand stepped beyond its established design language, opting for a 51 x 39 mm case—a departure from its signature tonneau-shaped silhouette. To minimize the movement's thickness, Richard Mille opted for a classic construction, housing the movement within the case rather than utilizing the case back as a baseplate, as is common in many other ultra-thin timepieces.

This was made possible, in part, by a newly developed escapement. In a conventional Swiss lever escapement, the safety roller and guard pin—components designed to prevent the lever from "rebounding" or unlocking—add significant height. For the RM UP-01, Richard Mille and Audemars Piguet Le Locle (formerly Renaud & Papi) co-developed and patented a flat escapement, which employs an elongated lever fork and redesigned pallet horns to prevent such rebounding. Additionally, the movement features a Grade 5 titanium balance wheel equipped with six adjustable weights, an ultra-thin hairspring, and a design that eliminates the traditional crown. This movement offers a power reserve of 45 hours and operates at a frequency of 4 Hz.

Following more than 6,000 hours of research, development, and laboratory testing, the result is remarkable: the movement measures just 1.18 mm in thickness, while the entire RM UP-01 Ferrari timepiece is only 1.75 mm thick. Upon its release in 2022, it stood as the thinnest mechanical watch in the world. A simple comparison at the time underscored its extreme slimness: when placed next to a two-euro coin, the watch proved to be even thinner than the coin itself.

RM 43-01 Tourbillon Split-Seconds Chronograph Ferrari
Following the launch of the RM 43-01 Tourbillon Split-Seconds Chronograph in 2025, this piece marks the second collaboration between Richard Mille and Ferrari. While the RM UP-01 focused on minimizing the overall thickness of the watch, this project saw Richard Mille turn its attention to the further development of the split-seconds chronograph complication. To achieve this, Richard Mille collaborated with its long-standing movement partner, Audemars Piguet Le Locle (APLL), spending three years completely redesigning the RM 43-01 movement.

The watch places a special emphasis on the split-seconds mechanism, which allows for the simultaneous measurement of multiple time intervals. Two column wheels—each featuring six columns—govern the complex interactions between the various components, ensuring that the chronograph functions as smoothly and reliably as possible. The clamp mechanism responsible for stopping and releasing the split-seconds hand was also entirely re-engineered; instead of traditional springs, it utilizes specially shaped blade structures mounted on the split-seconds wheel. These structural modifications are designed not only to enhance the precision and reliability of the mechanism but also to ensure that its fine-tuned adjustments remain stable over long periods of use.

Thanks to these improvements, the split-seconds chronograph engages more fluidly, while mechanical fluctuations and frictional losses are significantly reduced. According to Richard Mille, this chronograph requires only about half the energy of previous designs. This not only enhances precision but also enables a power reserve of approximately 70 hours—though the exact duration varies based on the frequency and length of chronograph usage. The tourbillon, positioned at 5 o'clock, is particularly noteworthy; Richard Mille states that it takes three specialized watchmakers an average of three months to craft a single unit.

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A uniquely distinctive feature is the seconds display. Instead of a traditional hand, the seconds are indicated by five rotating sector-shaped discs that operate in synchronization with the tourbillon. Each disc represents a 12-second interval, collectively completing a full 60-second rotation cycle. The tourbillon is supported by a structure of titanium and Carbon TPT (a carbon fiber composite), with its bridge clearly visible on the dial side.

Charles Leclerc
Richard Mille created the RM 72-01 "Charles Leclerc" for Ferrari driver Charles Leclerc. While the watch first appeared on Leclerc’s wrist in 2025, it was never officially released by the brand. The RM 72-01 "Charles Leclerc" is built upon the CRMC1 chronograph movement—introduced in 2020, this was the first chronograph movement developed entirely in-house by Richard Mille and manufactured at its own workshops in Les Breuleux. It is a flyback chronograph movement featuring an innovative (at the time) dual-clutch system. This system utilizes two oscillating pinions—one for the chronograph seconds and one for the minutes—which draw power from different components of the movement. Despite consisting of 425 individual parts, the movement measures only 6.05 mm in thickness and offers a power reserve of approximately 50 hours.

Beyond its movement, the most striking feature of the RM 72-01 is its case. Crafted from red and white Quartz TPT, the case echoes the colors of the Monegasque flag—a nod to the home country of the racing driver from Monaco. The dial also adopts a red and white color scheme, featuring large sub-dials for the chronograph minutes and hours, as well as a small seconds indicator.

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