Cartier may have just introduced its 'Ballon Bleu' collection in 2007, but it's quickly risen to be a brand best-seller. This automatic reference features a 42mm polished stainless steel case and an intricately etched silver guilloché dial with bold Roman numerals, blued steel hands and a calendar aperture at three o'clock. The curved guard keeps the crown protected, while the smart black alligator strap will become increasingly soft and supple the more you wear it.

We offer a two-year warranty for all working parts and manufacturing faults for luxury watches. For more information, contact one of our experts by emailing watches@mrporter.com