To celebrate the tenth anniversary of the J12 Chanel have released a series of limited edition versions of the watch. The Chanel Rétrograde Mystérieuse J12 features a specially developed movement which moves the crown from the side of the case to on the side of the dial to preserve the aesthetic curves of the watch. The Chanel Calibre RMT-10 tourbillon movement is truly unique with all of its components exposed anchored in place by ceramic bridges. Three models will be made, a black ceramic and white gold model and a black ceramic and rose gold model each of which will have ten examples made and an exclusive white ceramic and white gold model of which only one example will be made.