The Richard Mille RM 63-02 World Timer is a product of a design philosophy aimed at creating a world timer function that is remarkably simple to use. This simplicity belies the numerous hours of engineering put into its development. The watch features an automatic winding movement with a caliber CRMA4, showcasing hours, minutes, an oversized date, and a universal 24-hour time display. The power reserve lasts approximately 50 hours.
The watch's baseplate and bridges are made from microblasted grade 5 titanium, providing significant rigidity and precise surface flatness which is essential for the gear train's functioning. One of its distinctive features is the multiple time zone adjustment mechanism, which is incorporated into a rotating bezel made of satin-brushed and polished grade-5 titanium mounted on ball bearings for easy manipulation. When the wearer's current city is set to 12 o'clock, the RM 63-02 automatically defines local time and the time in 23 other cities.
The gear teeth profile is designed with a 20˚ pressure angle to optimize the power transmission to the balance wheel, promoting excellent chronometric results. The movement diameter is 33.80 mm, with a thickness of 7.73 mm, and it includes 37 jewels. The balance is made of copper beryllium (CuBe) with four arms and four setting screws.
Creating the case of the RM 63-02 is complex, necessitating almost 200 parts. The case includes a rotating bezel, which also contributes to the watch's water resistance up to 30 meters. The case is assembled using 12 spline screws in grade 5 titanium and features two Nitrile O-ring seals.
The RM 63-02's craftsmanship demonstrates a comprehensive approach, integrating the movement, case, and dial into a harmonious and functional design. The bezel, caseback, and crown protector are finished with a combination of polishing and satin brushing, while the caseband and lugs have both vertical and horizontal satin brushing with polished beveled edges