[Wireless Audio Adapter] - This wireless audio receiver lets you wirelessly stream your favorite music from smartphones, tablets and laptops to your wired speakers, car stereos and headphones. The Stereo System Bluetooth Receiver is perfect for upgrading all your wired speakers and old stereo systems to a Bluetooth-enabled speaker. [Bluetooth 5.0 Audio Receiver] - Equipped with the latest Bluetooth chip 5.0, the transmission efficiency is faster and more stable. Support atpX low latency, enjoy high definition lossless sound quality. Pair your Bluetooth smartphone and tablet via the convenient pairing button. The device automatically reconnects when in range. [Bluetooth Receiver with Multifunctional Encoder] - the encoder of this wireless Bluetooth adapter can be used to pause or play music, choose to Play previous or next music and control music volume. All in one, so you can easily control music directly on the Bluetooth adapter instead of directly on smartphones or other audio sources. [3D Surround Sound] - Our bluetooth adapter transforms your speakers speakers wired into Bluetooth speakers and provides a 3D surround three-dimensional surround sound experience, allowing you to enjoy the sound effects of a home theater. Note: This is a Bluetooth receiver (for speakers), not a transmitter (not for TV) [Easy to Use] - Connect the power with the USB cable -VS. Use the 3.5mm AUX or RCA cable to connect the 3D Bluetooth receiver and wired speakers or home stereo systems. Pair your phone with the Bluetooth receiver and click the 3D switch to turn on 3D surround sound. And you can insert a TF card to directly play music from the TF card.