Bluetooth 4.0 Receiver , Dual USB Charging Port Car Charger , Stereo Wireless FM Transmitter for Car Audio Music Streaming Sound System with Romote for IOS Android Smartphones ,MP3 MP4 (Silver) Charging: With 2 USB charging port, it can support 2 mobile phones to charge at the same time. Also, you can enjoy music while charging (Output:5V/2.1A) Built in Microphone and Hands free: Once connect the bluetooth, feel free to make a call while driving Enjoy Music:With the audio line (include,3.5mm AUX jack), you can connect an MP3/MP4 players or another external device to the AUX input of this unit. Of course you can connect your mobile phone with bluetooth Easy pairing: Plug the receiver into cigarette lighter or power port, open your bluetooth,search BT66, please pair and connect by using the original password 0000 Support U disk expansion; Support for insertion of TF player; Not power down because of rubber; Support the full range of rotation; Support EQ sound selection;Support fast forward and rewind