Designed for music phones, the Mini converges Bluetooth Music streaming, hands-free calling and USB-style charging. It can play all of the tunes from your music phone or mp3 device over the car speakers; connect to your cell phone via high quality Bluetooth 2.0 for hands-free conversation through the Mini’s built-in microphone and your car’s speakers; charge all of your devices. User can connect up to four separate A2DP music-enabled mobile phones and also attach your mp3 player. To control your music and handle calls, use the scrollwheel interface and natural white OLED display. Instructions and messages are also transferred wirelessly to your car’s radio display for minimal distraction.