Floyd Mayweather retired boxer broke numerous pay per view records during his fighting days.
He is said to have made a over billion dollars in prize money, according to Forbes.
The boxer is renowned for extravagant purchase, so breaking that billion dollar barrier may have been the inspiration behind his latest purchase.
A $US18 million dollar watch known as The Billionare created by jeweller Jacob&Co.
The watch which is made of 18k white gold is set with 1.5 carat diamonds, total weight 260 carats.