Richard Mille - RM 015 - Tourbillon Dual Time ZoneReference: RM 015 Model: Tourbillon Dual Time Zone Calibre RM015 Manual winding tourbillon movement with hours, minutes, dual time zone indicator, function selector, power reserve and torque indicators. We love the challenges yachts represent: harnessing as much of the winds boundless energy as possible and transforming it efficiently to win races, while constantly working to minimise resistance. We really wanted to express the powerful inspiration