Richard Mille has adopted an alloy it calls grey Cermet that it claims to combine the lightness of titanium and the hardness of diamond for a new RM 11-05 Automatic Flyback Chronograph GMT.
The company will make 140 of the limited edition, which goes on sale this month for $215,000.
Cermet’s properties have been put to use in ballistic protection, external aerospace fuselage components, and in the brakes of competition vehicles.
The RM 11-05 Automatic Flyback Chronograph GMT comes in a 50 x 42.70 x 16.15mm case.
Its RMAC3 calibre has a baseplate and bridges made of grade 5 titanium, which maintains the integrity of the lightweight movement.
The skeletonised automatic movement drives hours, minutes, seconds at 3 o’clock, oversize date, month, flyback chronograph with minutes and countdown counters at 9 o’clock, hour counter at 6 o’clock, UTC function and variable-geometry rotor.