The bluetooth music partner you can insert TF cards and U disk at the same time to enjoy music from your storage decices through the car audio.there will be also FM radio function when using the home audio. It can be placed anywhere comfortable in the dashboard Features:Support move next/move previous，voice up/down，stop/mute functionSupport phone call answering/hang up/call back functionSupport mode switch-Bluetooth mode-TF card mode-U disk mode-FM mode Specification:Power Supply:Built-in LibatteryBluetooth version:BluetoothOutput:3.5mm audio jackReceiving distance:10m with barrier-freeStandard accessories:USB charging cable 3.5mm audio cableWireless bluetooth technologyIncoming call and music mode seamlessly switchOffset the microphone when callbackInternet data flow function，can only support for those internet phones