Product Description: Upgrade your audio experience with the Bluetooth 5.0 Receiver Transmitter. This versatile adapter provides advanced features for a seamless and enhanced listening experience. Features: 3D Surround Sound Function: Immerse yourself in a 3D audio experience with the dedicated button for switching modes. Enjoy surround sound with high fidelity from any standard audio source. Auto-On Function: The adapter automatically turns on when connected to power, making it perfect for use in cars or other scenarios where an auto-on feature is essential. Dual Device Link: Connect two devices simultaneously, allowing you to stream music, make calls, and more. Compatible with devices featuring a 3.5mm audio port or 2 RCA audio ports. Wireless Music Streaming: Stream stereo music wirelessly to non-Bluetooth headphones and speakers, eliminating the need for cables. Space-Saving Design: Compact and lightweight for convenient use with various devices, ensuring portability and ease of use. Super Stable Connection: Equipped with Bluetooth 5.0 for steady pairing, fast transmission, and a wide signal range (33 feet). Connect to non-Bluetooth car audio systems, home stereos, headphones, speakers, amplifiers, and more. Auto-Connection: The Bluetooth receiver automatically connects to the last paired device when powered on for quick and hassle-free use. Upgrade-KEY Button: Easily control playback with Next Track/Volume Up, Previous Track/Volume Down, and Multi-Function Button (MFB). Supports SD Card Play: Play your favorite music directly from an SD card for added convenience. (Note: TF/SD Card not included) Powered by USB Charging: No built-in battery, ensuring continuous power for uninterrupted use. Package Contents: Includes Bluetooth 5.0 Audio Receiver Adapter, 3.5mm Aux Cable, 3.5mm to 2RCA Cable, Manual, and Type C Charge Cable. Enhance your audio setup with the Bluetooth 5.0 Receiver Transmitter your gateway to wireless and immersive sound. Order now and enjoy the freedom of wireless music streaming!