The aesthetic of the Ronde de Cartier is among the most distinctive of all. Some key parts are the watch’s famous circular face and gorgeous azure hands. Furthermore, the classic element that is the Cartier sapphire cabochon graces the cusp of this model. The watch comes in a variety of styles that are available is a range of unique sizes and with special features. The Ronde de Cartier comes in either a 36 mm model or a 42 mm version.