Calibre 3230 incorporates the patented Chronergy escapement, fabricated from nickel-phosphorus, which mixes high Strength performance with great dependability and is likewise proof against solid magnetic fields. This motion is fitted Using the blue Parachrom hairspring, produced by Rolex in a paramagnetic alloy. Over the years, Rolex has launched subtle alterations https://edwinrybfh.answerblogs.com/30740191/an-unbiased-view-of-rolex-oyster-perpetual-datejust