Deepsea Challenge essentials used by Rolex for the

used by Rolex for the first time on this watch

Screw-down winding crown

Steel screw-down winding crown

and the hour markers and crown riveted by hand

14K yellow gold round engagement ring setting featuring a polished gold band and classic cathedral setting

Deepsea Challenge essentials used by Rolex for theCeramic Bezel and Luminescent Display The 60 minute graduated, unidirectional rotatable bezel of the Deepsea Challenge enables divers to precisely and safely monitor their dive and decompression times. It is equipped with a patented black Cerachrom bezel insert manufactured by Rolex in a virtually scratchproof ceramic whose colour is unaffected by ultraviolet rays. The graduation is coated via PVD (Physical Vapour Deposition) with a thin layer of