Swiss-Grade RMUL2 Clone Hand-Wound Skeleton Movement
The Richard Mille RM 055 White Sapphire super clone runs on a Swiss-grade hand-wound mechanical movement engineered to match the genuine Richard Mille RMUL2 caliber in feel, frequency, and architecture. The movement operates at 21,600 vibrations per hour, winds by hand through the 2 o'clock crown, and holds a power reserve of approximately 55 hours, which covers over two days off the wrist. The caliber drives the central hours, minutes, and seconds across a grade 5 titanium baseplate and grade 5 titanium bridges, the same architectural choice the genuine RMUL2 uses for shock resistance and weight reduction across the sport-watch line.
Accuracy, Shock Resistance and Daily Performance
Daily deviation holds within -5 to +8 seconds per day after factory regulation on the RM055 Super Clone, close to the chronometer band that buyers expect from a Swiss-grade hand-wound build. The grade 5 titanium baseplate and bridges give the movement a strong, light core that handles shock during sport use, which is the architectural reasoning behind the genuine RMUL2 caliber. The 50-meter water resistance and the screw-down crown let the RM 055 White Sapphire hold its seal through daily wear, hand washing, and light water contact, in line with the active-wear positioning of the Bubba Watson reference. The skeleton bridge layout also helps the buyer monitor the mainspring barrel state at a glance, which is a practical advantage of a hand-wound build.
Spec grid:
TypeHand-wound mechanical, skeleton
Frequency21,600 vph (3 Hz)
Power ReserveApproximately 55 hours
BaseplateGrade 5 titanium
BridgesGrade 5 titanium, satin finished
FunctionsHours, minutes, seconds