For this Patek Philippe Ref. 5960-1A watch, it is carrying with the homemade CH 25-520 IRM QA 24H self winding movement, and matching with the column automatically returning star wheel timing device, with the power storage display, calendar and day and night display function. The movement features the vibration frequency of 4 hz (swinging 28000 times per hour), winding energy is provided by 21 k gold counterclockwise winding swinging Vedas back of the watch dial. Different from ordinary Column Wheel design, fixture will not control the running of the Clutch wheel of the rod jaw which is installed in the Timing gear train, but as on the butterfly clutch, make it start or stop the fourth gear and timing pointer. So timing second hand can also be used as a second hand in a row, without affecting the precision of the wrist watch, and effectively curb the timing function in the time of start and stop beating.

The another big characteristic of the watch movement is its use of the Spiromax ® balance spring which is made of Silinvar ®. Spiromax ® has the advantages of the oscillation equilibrium, low weight, antimagnetic, etc. According to the request of patek philippe's mark, the walking time error everyday of the movement of the same quality of should be kept between -3 to + 2 seconds, while the balance spring design provides a perfect solution for patek philippe that keeps the pursuit of excellence.

The calendar device of the movement is patek Philippe patent calendar system. The system can automatically identify the current month and the corresponding 30 or 31 days a month. Only need manual adjustment time every year on March 1, that you can complete the date and month adjustment throughout the day.

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