Introduced in 2005, the Royal Oak 15300 was the first 'simple' Royal Oak to feature an in-house movement: caliber 3120. Rference 15300BA.OO.D088CR.01 has a yellow gold case and a 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.
