Bluetooth Receiver + Transmitter2 in 1 Bluetooth adapter gives TX/RX modes. With TX mode, it can transfer audio from your Bluetooth incompatible TV to your Bluetooth devices, such as transmitting headphones. With RX mode, this can be audio from your Bluetooth devices, such as transferring from a phone to a stereo device that turns Bluetooth off. If you want to change the mode, you do not need to turn off the power. HD & LL + Handsfree + LED IndicatorBluetooth 5.0 audio adapter provides faster transmission and lower latency, supports HD and LL, which means higher quality during transmission. Just enjoy the sound quality without delay. The screen clearly displays the current mode, connection types and supported passcode, so you can get the required information. Quick Dual ConnectionYou can connect 2 Bluetooth devices at the same time to share music with your partner. To turn the unit on and plug it in, simply push the ON & OFF TX & RX to ON and the corresponding mode. Next, locate the Bluetooth signal on your Bluetooth device and connect it. If you want to connect the second device, press the side button twice for faster connection. 24h Play + 20M RangeBluetooth 5.0 version means low power consumption , faster transfer rate and increased transmission distance. The maximum wireless distance is up to 20 meters (without obstacles). The high performance of the 600mAh battery ensures 24 hours of consecutive use. You can both watch a dozen movies and listen to music all day long without the hassle of power outages. Multiple Applications: Digital Optical + 3.5mm AUX + RCAThis Bluetooth receiver is Equipped with a 3.5mm AUX audio cable, a Toslink digital optical audio cable and 3.5mm RCA cable in the package. You don't have to buy the connection cable, everything is there.