The ronde solo preserves the perfectly pitched classical elegance and signature cartier features of the ronde louis cartier watch that serves as its inspiration roman numerals blue sword shaped hands and rail track minute circle the ronde solo watch features a steel version of the braceletronde solo de cartier watch 36 mm mechanical movement with automatic winding steel case beaded steel crown set with a synthetic cabochon shaped spinel silvered opaline dial blued steel sword shaped ha