A revised edition of a model developed by Perrelet in 1995, the Double Rotor in its current Peripheral version is equipped with the new self-winding IWC-manufactured P-341 calibre, with two rotors working in solidarity with each other: the upper one in the shape of a ring that appears and disappears below the hour-markers, drawing small arcs between the central area of the dial and the outer perimeter, and the lower one pierced with Perrelet's "P" and decorated with côtes de Genève and a snailed motif. The case, which is available in steel, PVD-treated steel or gold, has a distinctive 'coussin' shape with rounded corners and is equipped with a black alligator strap and a steel folding clasp.
