====== Central rotor ======
{{wst>image_r|Zenith_El_Primero_Werk|[[Automatic]] movement Zenith El Primero with [[central rotor]]}}
With this design principle of a [[self-winding]] movement, the [[weight segment]] turns at the center of the [[movement]] and is also mounted on the bottom side. So the entire housing size can be exploited - in contrast to the [[micro-rotor]], where the movement is integrated and decentralized. Of great importance has become the principle of the [[ball-bearing]] of central rotors, which has been developed at [[Eterna]]. Another full-width rotor technology is the rare [[peripheral rotor]].


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