Actor Johnny Depp has finally confirmed his engagement to girlfriend Amber Heard by joking about his "not very subtle" engagement ring.

The 50-year-old showed off a diamond engagement ring during a promotional tour of his latest movie `Transcendence`, reports contactmusic.com.

Asked whether he was engaged, Johnny quipped: "The fact that I'm wearing a chick's ring on my finger is probably a dead giveaway. Not very subtle."

The star first met Amber on the set of `The Rum Diary` in 2011 and a year later separated from his partner of 14 years, French actress Vanessa Paradis, with whom he has children Lily-Rose, 14, and Jack, 11.