Vafru Bluetooth Receiver Wireless In-Car FM Transmitter Newest version : hands-free calls, enjoy clear music, GPS voice navigation, charge your device Supports USB flash disk playing Built-in microphone makes hands-free calls easy An universal USB charging port for charging mobile phones and other devices (output: dc 5v/1a), so you can power up while you're talking or listening to music Adapting with professional-grade Bluetooth module