The Ballon Bleu is the height of finesse for Parisian brand Cartier. This minimalist watch with curves in all the right places launched in 2007 and is now even more svelte than usual with a 6.90mm thick case. The 40mm rose gold case houses a manual-wind mechanical movement made by Cartier. The 430 MC calibre brings to life the hours and minutes. The dial features large gilded Roman numerals and a minute track. The integrated crown nestled in a domed arch nudges the indices deeper into the dial at 3 o’ clock. As you’d expect from the Ballon Bleu collection, the winder is topped by the famous blue ball. The time is on a lustre dial which means it has been guillochéd by hand then coated in enamel for a lightly engraved and bright anthracite surface. Price: 17,500 CHF