catherinen1997
About Company
The El Primero 21 features two separate escapements, each with a balance spring made of a new nep horloges patented material, Carbon-Matrix Carbon Nanotube (say that five times fast). One escapement is just for replica watches the time and the other just for the chronograph, with the first running at 36,000 vph and the latter running at 360,000 vph.
