The Audemars Piguet Royal Oak Ultra Thin Tourbillon Openworked ref. 26518ST.OO.1220ST.01 was introduced at SIHH 2017 as a limited edition of 100 pieces. It features a stainless steel case and matching bracelet, and is powered by a a skeletonized movement with tourbillon escapement.
Hand-wound, open-worked movement with tourbillon escapement and power reserve indicator.
