Fake Rolex Watches USA
The site reveals that Mayer spent a total $5 million on what he believed to be an authentic Rolex watches from watch dealer Robert Maron.
Mayer - who is thought to be a watch collector - made the purchase back in 2007.
Watch out! John Mayer is 'suing Charlie Sheen's best friend over a fake Rolex' according to TMZ
TMZ claim that Mayer then returned the watch and was given credit to buy another.
He is said to have spent up to $5 million in total, on multiple watches from the dealer.
The singer - who recently split with Katy Perry - is said to be looking for a refund on $656, 000, on seven other watches he purchased that were said to be counterfeit.
Funny friends? Charlie Sheen's pal Robert Maron is said to have sold a watch to John Mayer
Maron has long been a friend of Sheen, and was once described as his 'media adviser'.
A 'watch dealer to the stars', he has also visited Charlie on the set of Anger Management.
Claims: TMZ report that Robert Maron - pictured above - sold a watch to singer John Mayer that turned out to be a fake Rolex