Blue ceramic compression ring
Withstand pressure at extreme depths
The compression ring is made of blue ceramic: this innovative technical solution is another example of the use of this high-tech material in watches. The Cerachrom ring with a circular satin finish is part of the Ringlock system, an innovative hull design that ensures its resistance to tremendous pressure at extreme depths of up to 3,900 m. The uniformity of the color of the dial, the bezel disc and the compression ring is triumphantly illuminated by the brilliance of 18‑carat yellow gold, from which the Oyster case and bracelet are made.