John Mayer reveals most valued possession: 'My collection is worth millions'

Musician John Mayer has opened up about his obsession with watches in a new interview.

Speaking to The New York Times, Mayer admitted that he used to sleep with his head in a box as a child because that's where he would keep his watches, which were his most prized possessions: "When you're a kid, you don't have much, so you are building these imaginary, macrocosmic worlds out of these really small things."

Mayer's first watch, a 'Star Wars'-themed Armitron digital emblazoned with images of C-3PO and R2-D2, was one of the most exciting things he ever owned and he felt as though it was hugely important at the time: "It was I remember looking at it, and it was my friend. It was one of the biggest things I ever owned in my life, if you were to amortize it in terms of where you were in your life and what it meant to me."

The 'Your Body Is A Wonderland' sensation went onto confess that his collection, which he teased is valued "in the tens of millions" range, is now stored in a bank vault. He added: "I think you're born a watch person. Even if you don't own a watch for a while, you either get it or you don't."

Watch a recent interview with Mayer here: