Cle` in French translates to key, the resemblance of the newly designed crown to a key is absolutely unmistakable. The method of adjusting the date and time settings have changed, it is now more akin to using a key to wind up a clock. The new design can only be described as pure, as with the majority of watches in the Cartier range the crown is set with a specially cut sapphire. With the Cle` it has been ingeniously set to remain flush with the case. Cartier decided to combine the striking new design with an exciting new movement, the 1847 MC. High accuracy and automatic dual-directional winding being its most important features. The new Cle` is classic simplicity.