A feat of technical mastery, the Royal Oak Perpetual Calendar Openworked dresses the artistic openworked sapphire dial and the movement’s visible pink gold components in black ceramics. Black ceramic case, glareproofed sapphire crystal and black ceramic caseback, screw-locked crown. Sapphire dial, smoked external zone of the counters, pink gold applied hour-markers and Royal Oak hands with luminescent coating, black inner bezel. Black ceramic bracelet with titanium AP folding clasp.