Dr. Dre isnt the only rapper revolutionizing the headphone market. Rapper/actor/businessman Curtis 50 Cent Jackson and SMS Audio have partnered with Intel to launch the SMS Audio BioSport In-Ear Headphones. These new headphones take 50 Cents recently-launched SMS Audio Sport collection and add a custom heart monitor that collects fitness data — without forcing the user to wear a bracelet, smartwatch or chest or arm strap.