The RM UP-01 is 1.75mm thick — thinner than two stacked credit cards. To get there, Richard Mille and Audemars Piguet Renaud & Papi engineered a movement that is the case: no separate plates, no traditional bridges, no rotor.
Materials: grade 5 titanium baseplate that doubles as the movement plate, with the manual-wind escapement integrated into the structure. 45 examples produced. All sold.
Secondary market: $2.1M-$2.5M when one surfaces. Phillips has handled three examples since 2023; each set a new record for the reference.