Battery Time: 16.5 Hours Playback time / 4 Hours Live XM
External Power: 5.2V DC, 1600mA
USB Port: Compatible with USB 2.0 Hi-Speed
External Antenna: Included
Antenna Connector (Home and Car Dock): RF SMB
System Requirements for CD/ROM Applications: Windows XP or Windows Vista. Windows Media Player 11 or higher, minimum of 256 MB RAM, at least 100 MB hard-drive space. The following Operation Systems are not supported: Windows 95, 98, NT, ME, 2000 and Mac OS.