NEW YORK - Pop music phenomenon Justin Bieber has launched a new line of headphones called "Justbeats by Dr. Dre" exclusively at Best Buy stores in the United States and on BestBuy.com. According to Best Buy the headphones come in Bieber's favorite purple color and are priced at SRP $199.95 for the Justbeats by Dr. Dre Solo Headphoneand SRP $119.95 for theiBeats by Dr. Dre Justbeats Edition. Both versions feature ControlTalk, a technology which lets users answer a phone callwhile listening to music.