BT-21 5.0 Transmitter Receiver Supports Auto Startup For TV

[Support Auto Startup Shutdown] Use the charging cable to connect your car or other power sources. When the car is turned off, it will auto shut down. [2 in 1 Adapter] In TX mode, the transmitter is plugged into non devices such as TV, PC and MP3 player via AUX and transmits to headphones, speaker, soundbar; In RX mode, the receiver can be connected to wired speaker, earphones and to receive from smartphones via.

eBay