Richard Mille used the most advanced technology applied on Formula 1 cars as inspiration to ensure exceptional accuracy and rigidity of its new RM 011 automatic caliber RMAC1, which now boasts with a flyback chronograph function and with a variable geometry rotor.
Crafted from brown silicon nitride (the bezel and case back), which is an extremely resistant material (to up to 1500 Vickers), this RM 011 watch is resistant on corrosion and temperature oscillations. Borrowed from the automobile industry to make valves, turbocharger rotors, etc., silicon nitride is actually very lightweight, but sturdy.
To create these components, silicone powder is formed in an isostatic press where a pressure of about 2,000 bars is applied. The blank obtained by pressing is then heated to 1,500°C. A deviation of 10°C in temperature can alter the physical characteristics of silicon nitride at any moment. After 12 hours at extreme temperatures, the volume of a part will have diminished by more than 20%. These components are machined with diamond tools to obtain exceptional finish.
The satin-brushed case-middle, crown and push-pieces are made of 18-carat red gold, while the push-piece guards from polished grade 5 titanium.
Richard Mille RM 011 Silicon Nitride features a tourbillon movement with automatic winding which offers numerous functions including hours, minutes, seconds, flyback chronograph, 60-minute countdown function, 12-hour totaliser, and the annual calendar. The movement is nested in 50 mm x 40 mm case, and it beats at 28,800 vibrations per hour.