The manual wind Panerai caliber OP XI movement is based off an an ETA 6497/2. First seen in Panerai models around 2002. It has 17 jewels with a 56 hour power reserve and 21,600 vph.
ETA 6497-2
https://www.youtube.com/watch?v=Xnh7O22mduE In this detailed video by perplxr, watch as a hand-wound ETA caliber 6497-1 movement gets overhauled from start to...
What is the difference between caliber 6497-1 and 6497-2? There are two variations of the ETA/Unitas 6497 including the 6497-1...
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