richard mille rm11 for sale GMT-Master II. Oyster, 40 mm, Oystersteel. Reference 126710BLRO. View in night mode. Discover in 360°. View variations. In connection with the world. The Oyster Perpetual GMT-Master II in Oystersteel with a black dial and an Oyster bracelet. 24-Hour Rotatable Bezel. Innovative high-technology. Subscribe