movement ??

[Feras]

Originally Posted by The GMT Master

Hi Grady,

The standard Nivarox hairspring and the Parachrom hairspring are essentially interchangeable, so a Parachrom hairspring could be technically found in any Rolex movement with a free sprung balance. The 3131 and 3132 are of a different construction to the 3130 as well as having the Parachrom, hence their different designations

Hope this helps!

Chris

The 3132 is unitque