The on-board USB / SD Card media player offers transport controls and is compatible with .MP3 and WMA files. Audio streaming is also available via Bluetooth. The internal rechargeable battery offers 5 hours of playback time and a 3-hour recharge time. The 3-piece design easily packs up into a suitcase weighing less than 29 lbs, making it easy to bring great sound anywhere. The Envoi Go ships with a power cord and two 15' 1/4" speaker cables