The Citizen Jet was one of the first movements with peripheral rotor. A peripheral rotor is not attached at the centre of the movement. In 2009, Bucherer created a peripheral rotor that is completely on the outside of the movement, leaving the latter visible.
Caseback removed 
The peripheral rotor is not attached to a central point. 
The automatic system 
The gear driven by the rotor is in its internal circumference rather than being under it as in a normal automatic system. 
The peripheral rotor 
The movement without the rotor. 
The autmoatic system 
The underside of the automatic system 
Focus on the pinion that makes contact with the ratchet wheel. 
Movement with the automatic system removed. 
Focus on the ratchet wheel and click. 
Focus on the gear train 
A hair-thin spring holds the wheel carrying the seconds. 
Balance wheel and balance cock.