The Royal Oak Concept collection houses some of the most impressive and cutting-edge watches made by Audemars Piguet, and the present 26233 is no exception. Its case of 44mm houses the hand-wound caliber 2941 with tourbillon and chronograph - the latter featuring a linear indicator for the elapsed minutes.Reference 26223OR.OO.D099CR.01 has its case done in pink gold and white ceramic. It is fitted with a white rubber strap.This model was introduced in 2016.