A watch worn through a silver-medal Olympic 100metres campaign is up for sale next month. Yohan Blake's Mille should be worth at least $1 m.

A company that emerged from the marine engineering sector holds the secret to the ultra-luxury brand’s remarkable material that is as light as plastic, but several times stronger than steel.

Jay-Z 's Super Bowl ensemble was fairly understated, except for the standout accessory on his wrist. According to WWD, Hov wore a Richard Mille RM 66 Flying Tourbillon timepiece that cost around $3 million.