Major watch ... strap. £27,900 at bulgari.com Cartier has also embraced colour by reworking its classic Santos-Dumont - the first men’s wristwatch, introduced in 1904 - with a peacock-blue dial.

The colour is called horizon blue, and in certain lights, the dial appears purple ... of a minute track. The watch is finished with a brown hand-stitched goat leather strap.