On the Yacht-Master 42, the bidirectional rotatable bezel is fitted with a 60-minute graduated Cerachrom bezel insert in matt black ceramic. Its raised graduations and numerals are first moulded into the ceramic and then polished. The first 15 minutes are graduated minute-by-minute to allow time intervals to be read with great precision. The bezel can also be turned with ease thanks to its knurled edge, which offers excellent grip.
Rolex played a pioneering role in the development of special ceramics for monobloc bezels and monobloc bezel inserts. Not only are these new materials extremely corrosion-resistant and virtually scratchproof, their colours are also of a rare intensity and unaffected by ultraviolet rays. The brand has developed exclusive expertise and innovative high-technology manufacturing methods that allow it to produce these ceramic components completely independently.