Bell & Ross Watch BR 05 Skeleton Black Ceramic BR05A-BL-SK-CE/SCE. With impressive technical properties such as complete resistance to scratches, ceramic has become a key material in watchmaking. Paired with the intensity of black, the material becomes a direct reference to aircraft cockpits with their on-board instruments, central to the watch brand's DNA and design. For the first time, Bell & Ross has used the technical material in its urban line along with its favourite colour, black.