Following in the footsteps and at the same time challenging Dr. Dre, Diddy and Jay-Z, hip-hop entrepreneur 50 Cent has ventured into the audio device business, revealing his latest hustle, Sleek By 50 Cent headphones. Curtis took to the Consumer Electronics Show (CES) out in Las Vegas to reveal his new product to the world. The headphones operate on a new technology, klear technology, and can be used wirelessly, providing the same quality sound as wired headphones. No word on the release date, but expect these to hit stores later this year. They will retail for about $350.