[Wireless Audio Adapter] - Stream your favorite music wirelessly from smartphones, tablets, and laptops to your wired speakers, car stereos, and headphones. This Stereo System Bluetooth receiver is perfect for upgrading any of your wired speakers and old stereo systems into a Bluetooth-enabled speaker. [Bluetooth 5.0 Audio Receiver] - Equipped with the latest Bluetooth 5.0 chip for faster and more stable transmission efficiency. Supports aptX low latency for high-definition, lossless audio quality. Pair your Bluetooth smartphone and tablet using the convenient pairing button. The device automatically reconnects when within range. [Bluetooth Receiver with Multifunctional Encoder] - The encoder on this wireless Bluetooth adapter allows you to pause or play music, select the previous or next track, and control music volume. Everything is integrated, so you can easily control your music directly on the Bluetooth adapter instead of your smartphone or other audio sources. [3D Surround Sound] - Our Bluetooth adapter transforms your wired speakers into Bluetooth speakers, delivering a 3D surround sound experience for an immersive home theater audio effect. Note: This is a Bluetooth receiver (for speakers), not a transmitter (not for TVs). [Easy to Use] - ①Connect power via USB cable. ②Use the 3.5mm AUX or RCA cable to connect the 3D Bluetooth receiver to your wired speakers or home stereo system. ③Pair your phone with the Bluetooth receiver and tap the 3D switch to activate 3D surround sound. You can also insert a TF card to play music directly from it.