Built around a 50 mm titanium case and titanium bezel, the RM 39 reflects Richard Mille's commitment to technical ambition in watchmaking. The skeletonized dial allows a direct view into the manual winding tourbillon chronograph movement beneath, while sapphire crystal on both sides ensures that nothing obscures the architectural detail within.
Practical engineering details include a screw-locked crown and 30 metres of water resistance, lending the watch a degree of everyday robustness alongside its mechanical complexity. A folding clasp secures the rubber strap, keeping the watch firmly on the wrist in the demanding conditions its aviation theme implies.
The RM 39 sits at the intersection of lightweight materials and intricate horology — a 50 mm statement piece that wears its titanium construction and open movement display as defining characteristics rather than mere embellishments.