The Royal Oak 15407 was introduced at SIHH 2016. It features an open-worked movement with two superimposed balance wheels in the typical Royal Oak case with dimensions similar to that of the 2015 15400. Reference 15407ST.OO.1220ST.01 has a stainless steel case and matching bracelet. Reference 15407OR.OO.1220OR.01 has a pink gold case and bracelet.
Self-winding, open-worked movement. In an effort to increase stability and precision a second balance wheel and balance-spring are mounted to the same axis as the original, in effect increasing the mass and thus inertia over the use of a single balance assembly of the same size. Movement shown from the dial-side.
