The JustBeats are a spin-off edition of the rapper and producer’s popular Beats by Dre collection.

The teen star said he had worked with Dre because he wanted his fans to experience “a new sound” when they listen to music.

He added that the headphones were available in his favourite colour, purple, because “it represents me the best”.

As previously reported, Bieber is set to embark on a UK tour next year alongside 10-year-old Willow Smith.

Dr Dre is currently putting the finishing touches to his much-anticipated studio album ‘Detox’.

(by Jason Gregory)