[Visual screen]: unique screen design, Bluetooth transmitter can freely choose the Bluetooth headset or speaker to connect.The Bluetooth name will be displayed on the display, you can freely choose, more convenient, will not be connected by mistake.[Transmitter Receiver 3-In-1]: The portable adapter that can be used as a transmitter or receiver at the same time,and with hands-free function.In transmitter mode, convert TV, PC, CD player, iPod, MP3 / MP4 into a Bluetooth transmitter. Receiver mode: ideal for sound systems transmitting music at home or in the vehicle[HiFi Sound]: Broad Compatibility Impeccable Sound Quality Relies on A2DP Bluetooth profiles for a smooth operation and perfectly synced high-fidelity audio reproduction[Enjoy the Silence]: Benefit from bluetooth audio when exercising, watching Late night TV shows, or simply when you want to keep the entertainment for yourself onlyinstallation type: Plug Inconnector type: Stereo Audio