The Central Tourbillon movement was the only automatic winding Central Tourbillon composed of 320 movement parts. It is also the only flying Central Tourbillon which has been COSC Chronometer certified, according to Omega.For the Central Tourbillon, the titanium Tourbillon cage has 41 parts and weighs only 0.46 gramme, the stud screw used weighs a mere 0.000364g, which means that a gramme of steel can be made into 2750 of such screws by Nivarox.The model features 2 separate crowns, a single position classic crown serves to wind up the mainspring and a second crown on the case back is for time setting only.This new coaxial version with open dial concept and beautiful dark brown PVD coating plates and bridges is only 0.95mm thicker and has very high chronometric performance. The precision of the watch is close to absolute for the first 24 hours of running and the amplitude variation within one day is only 10 degrees, according to Marc-Andre Miche.
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