Introduced in 2012, the Royal Oak 15400 pairs the technical merits of the earlier 15300 with a case size updated to 41mm. Reference 15400OR.OO.D088CR.01 has a pink gold case and silver dial. It is fitted with an alligator strap.
The in-house caliber 3120 has a total of 280 parts. The rotor, in 22ct gold, is mounted on ceramic ball bearings.