The Audemars Piguet Royal Oak 15407ST.OO.1220ST.01 is a striking showcase of technical innovation and architectural watchmaking, executed in classic stainless steel with a fully openworked dial. Measuring 41mm, the case retains the Royal Oak’s iconic design elements—octagonal bezel with exposed screws, integrated bracelet, and a mix of brushed and polished finishing that enhances its geometric form.