Description change to:Prepare for a high definition, fully isolated listening experience any time, any place with the SL300. These powered performance headphones are engineered to deliver such a high quality of pristine, balanced sound that they are appropriate for use by music professional and they’re also a stylish option for the tasteful traveler looking for superior noise cancelling technology. Whether you’re a producer, a DJ or a music aficionado the SOUL by Ludacris experience delivers sound that moves your soul. 1/8″ (3.5mm) Gold Plated connector. Uses 2 AAA batteries (included).