2 in 1 Design : By using this wireless adapter, you can send and receive all of the audio freely and easily. Transmitter enables your TV, AV Receiver, Radio and other home audio source devices to stream music to your Bluetooth headphones or speakers; Receiver lets non-Bluetooth devices like your home stereo or AV Receiver and wirelessly stream music from your cellphone/PC.- Bluetooth 5.4: With Bluetooth 5.4 technology, the Bluetooth Transmitter Receiver provides a fast and seamless connection, delivering powerful and crystal-clear sound for an enjoyable listening experience.Audio cable can be bent 360 degrees, in the car, the narrow range can be easily dealt with it.- Long Enduring Time: Enjoy uninterrupted music with the wireless transmitter receiver's powerful 180mAh battery. With up to 10 hours in receiving mode and 8 hours in transmitting mode, it takes just 2 hours to charge. In addition, this Bluetooth music adapter can be used while charging, which is very convenient.- Clear Sound: Offers you 10M operation range with good performance, gives you a good experience when answering the phone or watching late-night shows. In order to get clear sound, we recommend NOT using the Bluetooth transmitter-receiver while charging.- Wide Compatibility: With a bending-resistant audio plug and lightweight body design, this wireless transmitter receiver allows for seamless audio connectivity and improved sound quality. Its easy portability and wear-resistant design make it ideal for use with various audio devices, including car and home audio systems- Package Contents: 1x2-in-1 Bluetooth 5.4 Audio Adapter1x Charger Cable 1xUser Manual.