Cartier, Cle de Cartier, key watch, model: W4CL0005, automatic winding, stainless steel, 31mm. (Aftermarket Diamond), inspired by the design of "keys", the cushion-shaped case has smooth and gentle lines. The crown is hidden on the right side of the case, resembling a keyhole in shape, which is the most recognizable feature of the series. The silver-white radial dial is paired with Roman numeral hour markers and blue steel hands. There is a date window at the 3 o 'clock position. The overall style is elegant and grand. The bezel is set with a circle of brilliant-cut diamonds (some are aftermarket diamond versions), and it is paired with a black alligator leather strap, exuding a luxurious feel.