... with most of the phone hands-free car phone, just the headset to the phone line, phone calls, MP3 to cell phone calls can be silent ... car cigarette power,listen to MP3 music and hands-free phone call to the phone itself without the power consumption for energy saving ... choice5)Support SD,USB etc MP3 music, also support mobile phone MP3 music6) Support 5 EQ modes, audio jack input7) Full ...