Swiss-Grade Caliber 2236 Clone Movement
The Rolex Datejust 31 178341 super clone runs on a Swiss-grade automatic movement engineered to match the genuine Rolex Caliber 2236 in feel, frequency, and autonomy. Rolex built the Caliber 2236 as the midsize 31mm movement with a silicon Syloxi hairspring for stability against shocks and temperature shifts. The movement operates at 28,800 vibrations per hour, winds bidirectionally through a free-rotating rotor, and holds a power reserve of approximately 55 hours for more than two days off the wrist.
Accuracy and Daily Performance
Daily deviation holds within -5 to +8 seconds per day after factory regulation, close to the chronometer standard of the genuine Caliber 2236. The smooth sweeping seconds hand and the quiet rotor confirm the Swiss-grade build of the Datejust 31 178341. The 100-meter water resistance and the screw-down Twinlock crown let the 178341 super clone hold its seal through daily wear, hand washing, and light water contact.
Spec grid:
TypeAutomatic, self-winding
CaliberSwiss-grade Caliber 2236 clone
Frequency28,800 vph (4 Hz)
Power ReserveApproximately 55 hours
WindingAutomatic bidirectional
FunctionsHours, minutes, seconds, date