The Royal Oak Ultra Thin Tourbillon Openworked was introduced in 2012 as a limited edition of 40 pieces in honor of the 40th anniversary the Royal Oak. It pairs the classic Royal Oak aesthetics with an elaborate hand-wound, open-worked movement with tourbillon escapement. A yellow gold version was introduced in 2016.
Hand-wound, open-worked movement with tourbillon escapement and power reserve indicator.
