Inspired by the “Blue Nuit, Nuage 50" hue of the original Royal Oak’s dial from 1972, Audemars Piguet developed a special ceramic using a PVD (Physical Vapor Deposition) to mimic the color and obtain its consistency throughout. The brand released three models using the rich hue: a 41 mm Royal Oak Double Balance Wheel Openworked, a 43 mm Royal Oak Offshore Selfwinding Chronograph in a two-tone design, and this all-blue 42 mm Royal Oak Offshore Selfwinding Chronograph. We prefer the latter for its high-impact, but comparatively toned-down look. It’s powered by the caliber 4404, which boasts an integrated selfwinding chronograph with a column wheel and flyback function. A bonus: You can see the column wheel in action through the sapphire crystal caseback.
From the article by Paige Reddinger
