The Audemars Piguet Royal Oak ref. 15400 is the largest Royal Oak ever made with an over-sized case with a diameter of 41 mm. This fantastic reference —also available in rose gold— is a clear result of the continuous evolution of the Royal Oak and the manufacture's constant forward thinking. 

Since its launch in 1972, the Royal Oak has gone through several design modifications including at least 12 references in 39mm, 12 in 36mm, 15 in 33 mm and even a rectangular Royal Oak ref. 6005. Today, the Royal Oak continues to embrace its core values just like it did 40 years ago regardless of its size. For some Royal Oak purists, bigger means betraying the original Jumbo. We have to admit that it took us a good year and months to come around; however, we can say with confidence that ref. 15400 is just as good.